IF 4.6 2区化学

Polymer Pub Date : 2026-08-26 DOI: 10.1016/j.polymer.2026.130730

Valentina Marturano, Aniello Staiano, Minna Hakkarainen, Huidi Sun, Giovanni Dal Poggetto, Maria Laura Di Lorenzo

{"title":"Enhancement of crystallization kinetics of poly (l-lactic acid) via peroxide-initiated melt reaction with triallyl phosphate","authors":"Valentina Marturano, Aniello Staiano, Minna Hakkarainen, Huidi Sun, Giovanni Dal Poggetto, Maria Laura Di Lorenzo","doi":"10.1016/j.polymer.2026.130730","DOIUrl":"https://doi.org/10.1016/j.polymer.2026.130730","url":null,"abstract":"Long-chain branched (LCB) poly(<ce:small-caps>l</ce:small-caps>-lactic acid) (PLLA) was synthesized through peroxide-initiated reactive melt processing using triallyl phosphate (TAP) as a multifunctional branching agent. Branched architectures were prepared by varying the TAP concentration, to elucidate the influence of the multifunctional reagent on PLLA structure and crystallization behavior. Gel permeation chromatography (GPC) and nuclear magnetic resonance (NMR) spectroscopy confirmed the successful grafting of TAP and the formation of LCB structures. The introduction of long-chain branching markedly accelerates crystallization of PLLA, with the optimum formulation (0.4-0.6 wt% TAP) exhibiting crystallization rates about 15 faster than those of the linear polymer, based on half-time of crystallization. Kinetic analysis indicated that the enhanced crystallization originates primarily from an increased nucleation rate and higher nucleation density promoted by the branched molecular architecture, while preserving the crystallization mechanism of PLLA. These results demonstrate that peroxide-induced reactive long-chain branching with TAP is an effective and scalable approach for overcoming the inherently slow crystallization of PLLA, providing a promising route to broaden its application potential.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"7 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148853045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biopolymer Encapsulation of Gold Nanorods: Broad Solvent Stability, Powder Generation, and Bulk Processing. 金纳米棒的生物聚合物封装：广泛的溶剂稳定性、粉末生成和批量加工。

IF 4.6 2区化学

Polymer Pub Date : 2026-08-25 DOI: 10.1016/j.polymer.2026.130711

Aklilu Worku, Kyoungweon Park, Richard Vaia

{"title":"Biopolymer Encapsulation of Gold Nanorods: Broad Solvent Stability, Powder Generation, and Bulk Processing.","authors":"Aklilu Worku, Kyoungweon Park, Richard Vaia","doi":"10.1016/j.polymer.2026.130711","DOIUrl":"https://doi.org/10.1016/j.polymer.2026.130711","url":null,"abstract":"Due to their unique optoelectronic properties, gold nanorods (AuNRs) are prominent candidates for advanced biomedical and industrial applications, specifically in sensing, imaging, catalysis, and cancer therapeutics. However, their susceptibility to irreversible aggregation and the lack of cost-effective, stabilization methods remain significant barriers to broader utilization. In this study, we present a scalable cost-effective functionalization strategy using denatured casein - an abundant, inexpensive food-grade amphiphilic biopolymer. Compared to synthetic amphiphilic polymers, denatured casein provides robust multivalent anchoring, inherent biocompatibility, and structural flexibility enabling transfer from hydrophilic to hydrophobic solvents. Additionally, the dispersions are highly resistant to high ionic environment, change of pH, and stable for over a year at high concentration without changes to optical properties. Also, spray-drying of the suspensions creates solid-phase nanocomposite powders with minimal aggregation or reduction of aspect ratio of the AuNRs. The powders can be redissolved in both polar and nonpolar solvents to reconstitute stable AuNR dispersions, as well as compression thermoformed into 3D geometries with very high AuNR concentration.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"36 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148853068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancing interfacial science through polymer brushes 通过聚合物刷推进界面科学

IF 5.1 2区化学

Polymer Pub Date : 2026-08-18 Epub Date: 2026-07-29 DOI: 10.1016/j.polymer.2026.130599

Edmondo M. Benetti, Michele Laus

引用次数: 0

Corrigendum to “Sodium lignosulfonate-assisted reduction of graphene oxide for enhancing thermal stability and wear resistance of ethylene-vinyl acetate foams” [Polym. 345 (2026) 129540] “木质素磺酸钠辅助氧化石墨烯的还原，以增强乙烯-醋酸乙烯泡沫的热稳定性和耐磨性”的勘误[Polym。345 (2026) 129540]

IF 4.6 2区化学

Polymer Pub Date : 2026-08-14 DOI: 10.1016/j.polymer.2026.130629

Xiansheng Hong, Yuying Zheng

引用次数: 0

Corrigendum to “Correlation between mesophase-driven structural evolution and film-forming behavior of polylactide during sequential biaxial stretching” [Polymer 361 (2026) 130440] “在连续双轴拉伸过程中，中间相驱动的结构演化与聚乳酸成膜行为的相关性”[Polymer 361(2026) 130440]的勘误表

IF 4.6 2区化学

Polymer Pub Date : 2026-08-11 DOI: 10.1016/j.polymer.2026.130641

Jinxiang Ai, Yuehao Tao, Yuan Li, Birui Guo, Yugang Song, Yu Zheng, Shaoyun Guo

引用次数: 0

Introduction to the Special Issue devoted to the Ferrol Discussion Meeting on polymer physics 2025 介绍专刊致力于Ferrol讨论会议的聚合物物理2025

IF 4.6 2区化学

Polymer Pub Date : 2026-08-06 DOI: 10.1016/j.polymer.2026.130642

Jaime Martín, Aurora Nogales, Alejandro J. Müller

引用次数: 0

Nanoconfinement-Induced Transition from Homo-crystals to Stereocomplexation Crystals of Polylactide Racemic Blends within Anodic Aluminum Oxide Templates 阳极氧化铝模板内聚丙交酯外消旋共混物的纳米束缚诱导从同晶到立体络合晶体的转变

IF 4.5 2区化学

Polymer Pub Date : 2026-05-26 DOI: 10.1016/j.polymer.2026.130303

Xiaoli Liao , Lu Wan , Xin Shen , Lihua Gong , Yaqian Guo , Yijing Nie , Jiping Wang , Zhaolei Li , Chao Yan

{"title":"Nanoconfinement-Induced Transition from Homo-crystals to Stereocomplexation Crystals of Polylactide Racemic Blends within Anodic Aluminum Oxide Templates","authors":"Xiaoli Liao , Lu Wan , Xin Shen , Lihua Gong , Yaqian Guo , Yijing Nie , Jiping Wang , Zhaolei Li , Chao Yan","doi":"10.1016/j.polymer.2026.130303","DOIUrl":"10.1016/j.polymer.2026.130303","url":null,"abstract":"<div><div>To gain deeper insight into the competitive growth between stereocomplexation crystals (SC) and homo-crystals (HC), polylactide racemic blends (PRB) were infiltrated into anodic aluminum oxide (AAO) nanochannels of varying diameters, and the influence of confinement on PRB crystallization was systematically investigated. X-ray diffraction (XRD) analysis reveals a nanoconfinement-induced transition from HC to SC. Fast scanning chip calorimetry (Flash DSC) measurements on confined PRB show a depression of the glass transition temperature and an acceleration of crystallization kinetics at lower temperatures. Based on the results from dynamic Monte Carlo (MC) simulations, the observed HC-to-SC transition is attributed to enhanced mobility and thus the local contact frequency of the enantiomers under nanoconfinement. This study provides direct evidence for the decisive role of segment mobility in the crystallization behavior of PRB, thereby contributing to a fundamental understanding of the underlying mechanism governing the competitive growth between SC and HC.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"360 ","pages":"Article 130303"},"PeriodicalIF":4.5,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148059956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Light- and heat-responsive interpenetrating polymer networks for solar-driven water desalination 用于太阳能驱动海水淡化的光和热响应互穿聚合物网络

IF 4.5 2区化学

Polymer Pub Date : 2026-04-09 Epub Date: 2026-03-11 DOI: 10.1016/j.polymer.2026.129845

Amir Jangizehi, Philipp Föckler, Otto Pazer, Mostafa Ahmadi, Sebastian Seiffert

{"title":"Light- and heat-responsive interpenetrating polymer networks for solar-driven water desalination","authors":"Amir Jangizehi, Philipp Föckler, Otto Pazer, Mostafa Ahmadi, Sebastian Seiffert","doi":"10.1016/j.polymer.2026.129845","DOIUrl":"10.1016/j.polymer.2026.129845","url":null,"abstract":"<div><div>Interpenetrating polymer networks (IPNs) consist of two interconnected networks that provide distinct physical and mechanical properties. When one of these networks is thermo-responsive, the volume phase transition temperature (VPTT) remains largely unaffected by the hydrophilicity of the second network. This makes IPNs an ideal candidate for modifying properties of hydrogels without altering VPTT. In this study, we explore the use of IPNs, based on poly(N-isopropyl acrylamide) (PNiPAAm) and sodium alginate (SAlg), as draw agents in forward osmosis (FO) desalination. The charged repeating units of SAlg increase the osmotic pressure, enabling water draw, and form crosslinks in the presence of calcium ions. Moreover, PNiPAAm is thermo-responsive and shrinks above VPTT, releasing the absorbed water. Additionally, incorporating graphene oxide (GO) as a light-absorbing agent further enhances the process efficiency by increasing temperature upon exposure to light. The results show that the swelling capacity, shrinkage behavior, and mechanical properties of the hydrogels are influenced by the content of SAlg and GO. However, the VPTT of the IPN hydrogels remains similar to that of the single PNiPAAm network. In FO desalination tests, the IPN hydrogel with 10 wt% SAlg and 0.2 wt% GO demonstrates the best balance between water flux and thermo-responsivity.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"351 ","pages":"Article 129845"},"PeriodicalIF":4.5,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147388309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Construction of alkaline-stable bacterial-cellulose-based anion exchange membranes by radiation-induced in-situ graft polymerization 辐射诱导原位接枝聚合法制备碱稳定细菌-纤维素基阴离子交换膜

IF 4.5 2区化学

Polymer Pub Date : 2026-04-09 Epub Date: 2026-02-25 DOI: 10.1016/j.polymer.2026.129789

Fei Wang , Ting Qu , Hao He , Ning Liu , Lin Yang , Jie Wang , Huiyu Yang , Ying Ou , Quanyuan Zhang , Fan Cheng , Fuqiang Hu , Guoliang Liu , Hai Liu , Zushun Xu , Chunli Gong

{"title":"Construction of alkaline-stable bacterial-cellulose-based anion exchange membranes by radiation-induced in-situ graft polymerization","authors":"Fei Wang , Ting Qu , Hao He , Ning Liu , Lin Yang , Jie Wang , Huiyu Yang , Ying Ou , Quanyuan Zhang , Fan Cheng , Fuqiang Hu , Guoliang Liu , Hai Liu , Zushun Xu , Chunli Gong","doi":"10.1016/j.polymer.2026.129789","DOIUrl":"10.1016/j.polymer.2026.129789","url":null,"abstract":"<div><div>Preparing high-performance anion exchange membranes (AEMs) with dimensional stability and long-term durability is challenging. Here, a series of functional filler-modified bacterial cellulose (BC)-based AEMs was fabricated by infiltrating a cationic monomer (vinylbenzyl trimethylammonium chloride, VBTAC) into polydopamine-coated BC (PDA@BC), followed by ultraviolet (UV)-induced polymerization. The resulting membranes, denoted as BC/PDVD, exhibited superior alkali stability and hydroxide ion conductivity. The highest water uptake and area swelling of BC/PDVD were 1138.82% and 36.05%, respectively. The hydroxide conductivity of the BC/PDVD membranes ranged from 78.49 to 82.78 mS cm<sup>−1</sup> at 80 °C. Moreover, the in situ polymerization of the ionic filling polymer and its effective cross-linking with BC nanofiber network significantly enhanced the compatibility and alkali resistance of the composite membranes. After immersion in a 1 M KOH solution at 60 °C for 1500 h, BC/PDVD<sub>10%</sub> maintained 91.86% of its initial conductivity. This UV radiation-induced in-situ graft polymerization and pore-filling strategy provides a reliable approach to reduce the “trade-off” between mechanical stability and electrochemical characteristic of AEMs.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"351 ","pages":"Article 129789"},"PeriodicalIF":4.5,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147279809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unveiling the gradient crystalline structure in the poly(ether-b-amide) foams 揭示聚乙醚-聚酰胺泡沫中的梯度晶体结构

IF 4.5 2区化学

Polymer Pub Date : 2026-04-09 Epub Date: 2026-02-28 DOI: 10.1016/j.polymer.2026.129802

Ping Zhu , Lihui Yuan , Feng Tian , Xia Dong

{"title":"Unveiling the gradient crystalline structure in the poly(ether-b-amide) foams","authors":"Ping Zhu , Lihui Yuan , Feng Tian , Xia Dong","doi":"10.1016/j.polymer.2026.129802","DOIUrl":"10.1016/j.polymer.2026.129802","url":null,"abstract":"<div><div>The microscopic crystalline structures of unfoamed bead (UFB), foamed bead (FB), foamed bead-welded part (FBWP), extrudate (EXT) and foamed extrudate (FEXT) of poly(ether-<em>b</em>-amide) were investigated by micro-wide-angle X-ray diffraction/small angle X-ray scattering (<em>μ</em>WAXD/SAXS). The crystallinity of the polyamide hard segment was improved after super-critical foaming (SCF), and double-melting peaks were incurred. A gradient crystalline structure with a core-skin difference was found in the FB, EXT, and FEXT, where higher crystallinity and orientation were found in the skin parts, i.e., the crystallinity in the skin could be 1 % higher than that in the core. It is not beneficial for a good steam-welding. The failure mode during tear process of FBWP is majorly adhesive failure, secondly cohesive failure of the skin detachment from the core, confirmed by digital image correlation (DIC) of the tear propagation and scanning electron microscope (SEM) of the fractured surface The tensile strength of FEXT and FBWP was 1/4 and 1/16 of that of hot-pressed film (HPF) respectively. The evolution of the microscopic structures of HPF, FEXT and FBP during tensile elongation were probed by <em>in situ</em> WAXD/SAXS. The long periods were increased remarkably after SCF, due to the increased crystallinity and improved phase separation. The lattice orientation of FEXT increased rapidly upon stretching, during which the strain-induced crystallization occurred. However, that of FBWP was not so high, since the inadequate inter-bead adhesion led the FBWP to break prematurely.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"351 ","pages":"Article 129802"},"PeriodicalIF":4.5,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147330009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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