journal
Journals Macromolecular Rapid Communica...

Macromolecular Rapid Communications

https://read.qxmd.com/read/38471478/non-isocyanate-polyurethane-segmented-copolymers-from-bis-carbonylimidazolides
#21
JOURNAL ARTICLE
Jose I Sintas, Ren H Bean, Rui Zhang, Timothy E Long
Bis-carbonylimidazolide (BCI) functionalization enabled an efficient synthetic strategy to generate high molecular weight segmented non-isocyanate polyurethanes (NIPUs). Melt phase polymerization of ED-2003 Jeffamine® , 4,4'-methylenebis(cyclohexylamine), and a BCI monomer that mimics a 1,4-butanediol chain extender enabled polyether NIPUs that contain varying concentrations of hard segments ranging from 40 to 80 wt. %. Dynamic mechanical analysis and differential scanning calorimetry revealed thermal transitions for soft, hard, and mixed phases...
March 12, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38461409/porous-anisometric-pnipam-microgels-tailored-porous-structure-and-thermal-response
#22
JOURNAL ARTICLE
Lea Steinbeck, Hanna J M Wolff, Maximilian Middeldorf, John Linkhorst, Matthias Wessling
The porous structure of microgels significantly influences their properties and, thus, their suitability for various applications, in particular as building blocks for tissue scaffolds. Porosity is one of the crucial features for microgel-cell interactions and significantly increases the cells' accumulation and proliferation. Consequently, tailoring the porosity of microgels in an effortless way is important but still challenging, especially for non-spherical microgels. This work presents a straightforward procedure to fabricate complex-shaped poly(N-isopropyl acrylamide) (PNIPAM) microgels with tuned porous structures using the so-called cononsolvency effect during microgel polymerization...
March 10, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38458610/4d-fabrication-of-two-way-shape-memory-polymeric-composites-by-electrospinning-and-melt-electrowriting
#23
JOURNAL ARTICLE
Chiara Pasini, Zhander Vohr Soreño, Dennis Schönfeld, Thorsten Pretsch, Gissela Constante, Ilia Sadilov, Leonid Ionov
This work presents a new method for 4D fabrication of two-way shape memory materials that are capable of reversible shapeshifting right after manufacturing, upon application of proper heating and cooling cycles. The innovative solution here presented consists in the combination of highly stretched electrospun shape memory polymer (SMP) nanofibers with a melt electrowritten elastomer. More specifically, the stretched nanofibers are made of a biocompatible thermoplastic polyurethane (TPU) with crystallizable soft segments, undergoing melt-induced contraction and crystallization-induced elongation upon heating and cooling, respectively...
March 8, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38456737/skin-friendly-flexible-ultraviolet-detectors-based-on-reversibly-deformable-worm-like-polymer-nanoparticles
#24
JOURNAL ARTICLE
Jianing Han, Zichao Deng, Rui Wang, Zhefeng Liu, Yalan Sun, Aihua Chen
Flexible ultraviolet (UV) light detection technology has important applications in wearable devices, smart sensors and other fields, and has attracted much attention in recent years. However, for most semiconductor-based UV detectors, the elastic modulus between rigid semiconductors and flexible substrates is mismatched, which makes it difficult to fabricate UV detectors that meet the needs of wearable devices. Herein, we develop a fully flexible, large-scale, skin-friendly UV photodetector component centered on photo-responsive worm-like polymer nanoparticles (NPs), and the resulting device can quantitatively detect UV illumination...
March 8, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38453154/designing-a-new-class-of-mechanophoric-polymer-based-on-epoxy-functionalized-rhodamine-derivative
#25
JOURNAL ARTICLE
Swadhin Chakraborty, Koushik Bhattacharya, Soumyadip Choudhury, Nikhil K Singha
Mechanophoric polymers are an interesting class of smart polymers which contain a special force-sensitive molecular motif that can lead to a chemical change within the polymer network in response to mechanical force. This investigation reports the design of a mechanophoric polymer based on epoxy-functionalized rhodamine via a monomeric approach. In this case, rhodamine was modified with glycidyl methacrylate (GMA) through an epoxy-amine reaction to design a vinyl-functionalized multi-armed macromonomer (Rh-GMA) which was reacted with butyl acrylate (BA) to prepare the crosslinked polymeric film...
March 7, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38453138/dynamic-thermosetting-resins-with-synergistic-enhanced-strength-and-toughness-through-combination-with-rigid-and-soft-microdomains
#26
JOURNAL ARTICLE
Yinzhou Guo, Tiantian Shu, Yihan Wang, Chenhui Cui, Qinghao Zhou, Qiang Zhang, Yilong Cheng, Zhishen Ge, Gang Chen, Yanfeng Zhang
Preparation of the materials that possess highly strong and tough properties simultaneously has always been a great challenge. Thermosetting resins as a type of widely used polymeric materials without synergistic strength and toughness limit their applications in some special fields. In this report, we present an effective strategy to prepare thermosetting resins with synergistic strength and toughness. In this method, the soft and rigid microspheres with dynamic hemiaminal bonds were fabricated firstly, followed by hot-pressing to crosslink at the interfaces...
March 7, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38445752/a-molecular-rheology-dynamics-study-on-3d-printing-of-liquid-crystal-elastomers
#27
JOURNAL ARTICLE
Senay Ustunel, Harsh Pandya, Marianne E Prévôt, Gisele Pegorin, Faeze Shiralipour, Rajib Paul, Robert J Clements, Fardin Khabaz, Elda Hegmann
We are presenting here a rheological study of a biocompatible and biodegradable liquid crystal elastomer (LCE) ink for 3D printing. These materials have shown that their structural variations have an effect on morphology, mechanical properties, alignment and their impact on cell response. Within the last decade LCEs have been extensively studied as potential printing materials for soft robotics applications, due to the actuation properties that are produced when LC moieties are induced through external stimuli...
March 6, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38444218/a-preliminary-study-of-thermosets-from-epoxy-resins-made-using-low-toxicity-furan-based-diols
#28
JOURNAL ARTICLE
Olena Shafranska, Catherine Sutton, Deep Kalita, Prakash Kannaboina, Sandip Tiwari, Mukund P Sibi, Dean C Webster
Glycidyl ethers were prepared from a series of furan-based diols and cured with a diamine to form thermosets. The furan diols had demonstrated lower toxicity than bisphenol-A in a prior study. The diglycidyl ethers showed improved thermal stability compared to the parent diols. Cured thermosets were prepared at elevated temperature using isophorone diamine (IPDA). Glass transition temperatures were in the range of 30-54 °C and depended on the structure of the furan diol. Coatings were prepared on steel substrates and showed very high hardness, good adhesion and a range of flexibility...
March 5, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38437791/a-unique-temperature-induced-reverse-supramolecular-chirality-assisted-gel-to-gel-transition
#29
JOURNAL ARTICLE
Dinesh Kumar Duraisamy, Samala Murali Mohan Reddy, Puchalapalli Saveri, Abhijit P Deshpande, Ganesh Shanmugam
Supramolecular hydrogels typically undergo a gel-to-sol transition with heat, as intermolecular interactions within the gel weaken. Although gel-to-gel transitions during heating are rare, they may occur due to minor rearrangements caused by thermal forces in the supramolecular self-assembled structure. Here, we present an unprecedented temperature-induced gel-to-gel transition assisted by supramolecular chiral inversion in a hydrogel system. The transition results from a left-handed M-type helix to a right-handed P-type helix, attributed to the π-system-conjugated amino acid, L-Tyrosine (Fm-L-Tyr)...
March 4, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38437164/precisely-controlled-polymerization-of-two-dimensional-conducting-polymers-in-quasi-liquid-layer-enables-ultrahigh-sensing-performance
#30
JOURNAL ARTICLE
Yucheng Zhu, Mengzhen Wei, Xinlei Ma, Hui Ma, Ruoqi Chen, Huanrong Zhang, Xusheng Wang, Junhui Ji, Mianqi Xue
Gas sensors based on conducting polymers offer great potential for high-performance room temperature applications due to their cost-effectiveness, high-sensitivity, and operational advantage. However, their current performance is limited by the deficiency of control in conventional polymerization methods, leading to poor crystallinity and inconsistent material properties. Here, the quasi-liquid layer (QLL) on the ice surface acts as a self-regulating nano-reactor for precise control of thermodynamics and kinetics in the polymerization, resulting in a 7...
March 4, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38430068/revolutionizing-cancer-treatment-biopolymer-based-aerogels-as-smart-platforms-for-targeted-drug-delivery
#31
REVIEW
Hala M Alkhalidi, Amerh Aiad Alahmadi, Waleed Y Rizg, Esam Bashir Yahya, H P S Abdul Khalil, Rayan Y Mushtaq, Moutaz Y Badr, Awaji Y Safhi, Khaled M Hosny
Cancer stands as a leading cause of global mortality, with chemotherapy being a pivotal treatment approach, either alone or in conjunction with other therapies. The primary goal these therapies is to inhibit the growth of cancer cells specifically, while minimizing harm to healthy dividing cells. Conventional treatments have been hampered by their side effects, often causing severe discomfort to patients. Researchers have been exploring innovative approaches to target cancer cells selectively. In this context, biopolymer-based aerogels emerge as innovative platforms, showcasing unique properties that respond intelligently to diverse stimuli, including temperature, pH variations, magnetic fields, and redox potential...
March 2, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38414279/scalable-fabrication-of-structurally-stable-polymer-film-with-excellent-uv-shielding-fluorescent-and-antibacterial-capabilities
#32
JOURNAL ARTICLE
Kaiyuan Shen, Hongchen Liu, Changjing Qiu, Mengzhen Yuan, Zhishan Chen, Haisong Qi
This research presents a new approach to facilely fabricating a multifunctional film using polyvinyl alcohol (PVA) as the base material. The film was modified chemically to incorporate various desirable properties such as high transparency, UV-shielding, antibacterial activity, and fluorescence. The fabrication process of this film was straightforward and efficient. The modified film showed exceptional UV-blocking capability, effectively blocking 100% of UV radiation. It also exhibited strong antibacterial properties...
February 27, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38413001/effects-of-structurally-different-tertiary-amines-on-the-properties-of-quaternized-anionic-exchange-membranes-potentially-applicable-for-water-electrolysis
#33
JOURNAL ARTICLE
Andrea Roggi, Gabriele Agonigi, Claudio Resta, Antonio Filpi, Elisa Martinelli, Elisa Guazzelli
In this work, two structurally different monoamines (trimethylamine (TMA) and N-methylpiperidine (N-MPip)) were used for the amination of a g-VBC-15 graft copolymer, obtained by the functionalization of a mechanically robust, commercially available styrene-butadiene block copolymer (SB) with vinylbenzyl chloride (VBC) via solution free-radical polymerization. Results demonstrate that g-VBC-15-based membranes quaternized with TMA had superior electrochemical performance than N-MPip counterparts, while the mechanical properties were good and only slightly inferior to those of N-MPip...
February 27, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38407503/powders-to-thin-films-advances-in-conjugated-microporous-polymer-chemical-sensors
#34
REVIEW
Saurabh Kumar Rajput, Venkata Suresh Mothika
Chemical sensing of harmful species released either from natural or anthropogenic activities is critical to ensuring human safety and health. Over the last decade, conjugated microporous polymers (CMPs) have been proven to be potential sensor materials with the possibility of realizing sensing devices for practical applications. CMPs found to be unique among other porous materials such as metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) due to their high chemical/thermal stability, high surface area, microporosity, efficient host-guest interactions with the analyte, efficient exciton migration along the π-conjugated chains and tailorable structure to target specific analytes...
February 26, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38407457/access-to-2-4-disubstituted-pyrrole-based-polymer-with-long-wavelength-and-stimuli-responsive-properties-via-copper-catalyzed-3-2-polycycloaddition
#35
JOURNAL ARTICLE
Lingna Wang, Jianbo Zhang, Chunmei Li, Wanbin Dang, Wei Guo, Junjian Xie, Fengtao Zhou, Qiuyu Zhang
Pyrrole-based polymers (PBPs), a type of fascinating functional polymers, play a crucial role in materials science. However, efficient synthetic strategies of pyrrole-based polymers with diverse structures are mainly focus on conjugated polypyrroles and still remain challenging. Herein, we describe an atom and step economy protocol to access various 2,4-disubstituted PBPs by in situ formation of pyrrole core structure via copper-catalyzed [3+2] polycycloaddition of dialkynones and diisocyanoacetates. A series of PBPs is prepared with high molecular weight (Mw up to 18200 Da) and moderate to good yield (up to 87%), which possessed a fluorescent emission located in the green to yellow light region...
February 26, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38400695/nano-micron-combined-hydrogel-microspheres-novel-answer-for-minimal-invasive-biomedical-applications
#36
REVIEW
Jiacheng Liu, Chengcheng Du, Hong Chen, Wei Huang, Yiting Lei
Hydrogels, key in biomedical research for their hydrophilicity and versatility, have evolved with hydrogel microspheres (HMs) of micron-scale dimensions, enhancing their role in minimally invasive therapeutic delivery, tissue repair, and regeneration. The recent emergence of nanomaterials has ushered in a revolutionary transformation in the biomedical field, which demonstrates tremendous potential in targeted therapies, biological imaging, and disease diagnostics. Consequently, the integration of advanced nanotechnology promises to trigger a new revolution in the realm of hydrogels...
February 24, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38395416/stimuli-responsive-polymers-for-engineered-emulsions
#37
REVIEW
Abhishek Rajbanshi, Eleanor Hilton, Cécile A Dreiss, Darragh Murnane, Michael T Cook
Emulsions are complex. Dispersing two immiscible phases, thus expanding an interface, requires effort to achieve and the resultant dispersion is thermodynamically unstable, driving the system toward coalescence. Furthermore, physical instabilities, including creaming, arise due to the presence of dispersed droplets of different densities to a continuous phase. Emulsions allow the formulation of oils, can act as vehicles to solubilise both hydrophilic and lipophilic molecules, and can be tailored to desirable rheological profiles, including "gel-like" behaviour and shear thinning...
February 23, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38375776/effect-of-lignin-structure-characteristics-on-the-performance-of-lignin-based-phenol-formaldehyde-adhesives
#38
JOURNAL ARTICLE
Xinwen Xu, Haiming Li, Xing Wang, Haiqiang Shi, Meihong Niu, Yongchao Zhang, Zhiwei Wang, Yanzhu Guo
As the second most abundant biopolymer, lignin remains underutilized in various industrial applications. Various forms of lignin generating from different methods affect its physical and chemical properties to a certain extent. To promote the broader commercial utilization of currently available industrial lignins, lignin sulfonate (SL), kraft lignin (KL) and organosolv lignin (OL) were utilized to partially replace phenol in the synthesis of phenol formaldehyde (PF) adhesives. The impact of lignin production process on the effectiveness of lignin-based phenolic (LPF) adhesives was examined based on the structural analysis of the selected industrial lignin...
February 20, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38366845/ionic-thermoelectric-generators-in-vertical-and-planar-topologies-based-on-fluorinated-polymer-hybrid-materials-with-ionic-liquids
#39
JOURNAL ARTICLE
Nelson Pereira, Luis Afonso, Manuel Salado, Carmen R Tubio, Daniela M Correia, Carlos M Costa, Senentxu Lanceros-Mendez
Ionic thermoelectrics, in which voltage generation is based on ion migration, are suitable for applications based on their low cost, high flexibility, high ionic conductivity and wide range of Seebeck coefficients. In this work, w e report on the development of ionic thermoelectric materials based on the fluorinated poly(vinylidene fluoride- trifluoroethylene), Poly(VDF-co-TrFE) as host polymer blended with different contents of the ionic liquid, IL, 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [EMIM][TFSI]...
February 17, 2024: Macromolecular Rapid Communications
https://read.qxmd.com/read/38365211/clickable-polymerization-induced-emission-luminogens-towards-color-tunable-modification-of-non-traditional-intrinsic-luminescent-polymers
#40
JOURNAL ARTICLE
Xiao-Li Sun, Hong Xue, Xi-Yao Gu, De-Shan Li, Hang Xiao, Wen-Ming Wan
Non-traditional intrinsic luminescent (NTIL) polymer has become an emerging field, and its color-tunable modification is highly desirable but still rarely investigated. Here, we demonstrate a click chemistry approach for the color-tunable modifications of NTIL polymers by introducing clickable polymerization-induced emission luminogen (PIEgen). Through Cu-catalyzed azide-alkyne cycloaddition click chemistry, a series of PIEgens have been successful prepared, which are further polymerized via reversible addition-fragmentation chain transfer (RAFT) polymerization...
February 16, 2024: Macromolecular Rapid Communications
journal
journal
34239
2
3
Fetch more papers »
Fetching more papers... Fetching...
Remove bar
Read by QxMD icon Read
×

Save your favorite articles in one place with a free QxMD account.

×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"

We want to hear from doctors like you!

Take a second to answer a survey question.