Random Copolymers Based on 2‐Ethylhexyl Acrylate Exhibit Unusual Glass Transition Breadth and Facile Autonomous Self‐Healing over a Broad Composition Range DOI Creative Commons
Tong Wang,

Wenshiue O. Young,

Mathew Suazo

et al.

Macromolecular Rapid Communications, Journal Year: 2024, Volume and Issue: 45(22)

Published: Aug. 16, 2024

Abstract Statistical copolymers are commercially important because their properties can be tuned by comonomer selection and composition. Rubbery‐state styrene (S)/ n ‐butyl acrylate (nBA) have previously been reported to exhibit facile, autonomous self‐healing over a narrow composition band (47/53 53/47 mol%). The need for is explained alternating sequences that accommodate interchain secondary bonding. It hypothesized achieve bonding without facile broad range. 2‐ethylhexyl (EHA) identified as yielding sequence‐independent interactions. For these interactions it tested experimentally glass transition breadth in rubbery‐state S/EHA copolymers, with S/n‐hexyl (nHA) S/nBA controls. ‐alkyl random enhanced breadths bands correspond self‐healing. In contrast, much greater than S/nHA at all compositions well of damage range full tensile‐property recovery, often 3–10 h. Characterization may serve simple screening tool identifying broad‐composition‐range, contribute polymer resilience sustainability.

Language: Английский

Natural Regenerative Hydrogels for Wound Healing DOI Creative Commons
Mariana Chelu,

José María Calderón Moreno,

Adina Magdalena Musuc

et al.

Gels, Journal Year: 2024, Volume and Issue: 10(9), P. 547 - 547

Published: Aug. 23, 2024

Regenerative hydrogels from natural polymers have come forth as auspicious materials for use in regenerative medicine, with interest attributed to their intrinsic biodegradability, biocompatibility, and ability reassemble the extracellular matrix. This review covers latest advances used wound healing, focusing on chemical composition, cross-linking mechanisms, functional properties. Key carbohydrate polymers, including alginate, chitosan, hyaluronic acid, polysaccharide gums, agarose, carrageenan, xanthan gum, are discussed terms of sources, structures specific properties suitable applications. The further explores categorization based ionic charge, response physiological stimuli (i.e., pH, temperature) particularized roles tissue self-healing. Various methods enhance mechanical biological performance these also examined. By highlighting recent innovations ongoing challenges, this article intends give a detailed understanding potential revolutionize medicine improve patient healing outcomes.

Language: Английский

Citations

18
Controlled polymerization of silver nanoparticle dispersed poly (aniline-co-3–bromo aniline) electroactive composites-one pot synthesis and characterization DOI

Vijayanand P. S,

A. Jeeva,

S. Ashokan

et al.

Journal of Dispersion Science and Technology, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 9

Published: Jan. 7, 2025

Controlled polymerization of silver dispersed poly (aniline -co-3–Bromo Aniline) electroactive composites was synthesized by using soft template polymerization. The formation complexes between nanoparticles (AgNPs) and a polyaniline matrix results in ordered nanostructured materials. In this study, we new series copolymer silver-dispersed poly(aniline-co-3-bromoaniline) an in-situ chemical oxidative method at different molar ratios the monomers. resulting were characterized UV–vis spectroscopy, FT–IR X-ray diffraction (XRD), scanning electron microscopy (SEM). optical absorption spectrum revealed peaks 338 nm 596 nm, attributed to π–π*and n–π* electronic transitions. spectra confirmed presence benzenoid quinoid rings within system. XRD analysis indicated amorphous nature crystalline metal nanoparticles, while SEM images displayed agglomerated spherical granular morphology with average particle sizes ranging from 150 300 uniform dispersion nanoparticles. four probe electrical conductivity measurements shows whose ranges 1.13 × 10−5 5.16 10−8 S/cm. These nanocomposites possess enhanced properties compared their individual components for industrial applications.

Language: Английский

Citations

0
Behavior of polyimides based on bicyclo[2.2.2]oct-7-ene-2,3,5,6-tetracarboxylic dianhydride under thermal treatment DOI Creative Commons
Petr Sysel,

Pavla Nekvapilová,

Jakub Havlín

et al.

Chemical Thermodynamics and Thermal Analysis, Journal Year: 2025, Volume and Issue: 18, P. 100180 - 100180

Published: March 1, 2025

Language: Английский

Citations

0
Modern radical chemistry DOI Creative Commons
Huan‐Ming Huang

Beilstein Journal of Organic Chemistry, Journal Year: 2025, Volume and Issue: 21, P. 945 - 946

Published: May 15, 2025

Language: Английский

Citations

0
Effect of Photo‐Initiation Polymerization and Thermal‐Initiation Polymerization on the Reduction of Glistening in Hydrophobic Acrylic Intraocular Lens Materials DOI Creative Commons

Tae Hyoung Kim,

Ki Chang Song

Macromolecular Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown

Published: May 25, 2025

Abstract Glistening is the condensation of water that forms within intraocular lens (IOL), which can degrade patient's vision quality. Photo‐initiation and thermal‐initiation polymerization are widely used for preparation IOL materials. However, few studies have been attempted to investigate difference between above two methods in reducing glistening In this work, investigated preparing hydrophobic acrylic An interesting result obtained photopolymerized materials much smaller than thermally polymerized The by be explained temperature‐dependency equilibrium content (EWC) prepared photo‐initiation showed less EWC reduction with decreasing temperature those polymerization, resulting glistening. Additionally, made has a greater UV blocking effect polymerization. These findings may provide additional insight into development commercial IOLs reduce

Language: Английский

Citations

0
Random Copolymers Based on 2‐Ethylhexyl Acrylate Exhibit Unusual Glass Transition Breadth and Facile Autonomous Self‐Healing over a Broad Composition Range DOI Creative Commons
Tong Wang,

Wenshiue O. Young,

Mathew Suazo

et al.

Macromolecular Rapid Communications, Journal Year: 2024, Volume and Issue: 45(22)

Published: Aug. 16, 2024

Abstract Statistical copolymers are commercially important because their properties can be tuned by comonomer selection and composition. Rubbery‐state styrene (S)/ n ‐butyl acrylate (nBA) have previously been reported to exhibit facile, autonomous self‐healing over a narrow composition band (47/53 53/47 mol%). The need for is explained alternating sequences that accommodate interchain secondary bonding. It hypothesized achieve bonding without facile broad range. 2‐ethylhexyl (EHA) identified as yielding sequence‐independent interactions. For these interactions it tested experimentally glass transition breadth in rubbery‐state S/EHA copolymers, with S/n‐hexyl (nHA) S/nBA controls. ‐alkyl random enhanced breadths bands correspond self‐healing. In contrast, much greater than S/nHA at all compositions well of damage range full tensile‐property recovery, often 3–10 h. Characterization may serve simple screening tool identifying broad‐composition‐range, contribute polymer resilience sustainability.

Language: Английский

Citations

2