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367 Newest Publications about the topic solution

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Synergistic effect of cellulose nanowhiskers reinforcement and dicarboxylic acids crosslinking towards polyvinyl alcohol properties

21-Apr-2016 | Amit Kumar Sonker, Naveen Tiwari, Rajaram Krishna Nagarale, Vivek Verma, Journal of Polymer Science Part A: Polymer Chemistry, 2016

ABSTRACT In the presented work, a significant increase in the tensile strength of the PVA composite material is reported. The obtained best value of 122 MPa and 14.6% swelling shows the excellent synergistic effect of both crosslinker and reinforcement material. The composite films were ...

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Pendant groups fine‐tuning thermal gelation of poly(ε‐caprolactone)‐b‐poly(ethylene glycol)‐b‐poly(ε‐caprolactone) aqueous solution

21-Apr-2016 | Yan Zhang, Miao Wang, Jinhai Ye, Meidong Lang, Journal of Polymer Science Part A: Polymer Chemistry, 2016

ABSTRACT Novel poly(ε‐caprolactone)‐b‐poly(ethylene glycol)‐b‐poly(ε‐caprolactone) (PCL‐PEG‐PCL) bearing pendant hydrophobic γ‐(carbamic acid benzyl ester) groups (PECB) and hydrophiphilic amino groups (PECN) were synthesized based on the functionalized comonomer γ‐(carbamic acid benzyl ...

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The effect of diamine length on the direct solid state polycondensation of semi‐aromatic nylon salts

14-Apr-2016 | C. D. Papaspyrides, A. D. Porfyris, R. Rulkens, E. Grolman, A. J. Kolkman, Journal of Polymer Science Part A: Polymer Chemistry, 2016

ABSTRACT In the current paper, a comparative study on the direct solid state polycondensation (DSSP) reaction of different terephthalate based semi‐aromatic salts (XT salts, X = 4–18) in the TGA micro‐reactor is reported. High purity XT salts were prepared in solution and were used as starting ...

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Pendant cyclic carbonate‐polymer/Na‐smectite nanocomposites via in situ intercalative polymerization and solution intercalation

06-Apr-2016 | Uzma Shaheen, Terence W. Turney, Kei Saito, Will P. Gates, Antonio F. Patti, Journal of Polymer Science Part A: Polymer Chemistry, 2016

ABSTRACT Nanocomposites of sodium smectite with polyether‐ and polystyrene‐containing pendant cyclic carbonates offer a novel approach to improving hydraulic barrier properties of Na‐smectite liners to saline leachates. The cyclic carbonate polyethers were prepared by cationic ring opening ...

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Synthesis of polymer with defined fluorescent end groups via reversible addition fragmentation transfer polymerization for characterizing the conformations of polymer chains in solutions

31-Mar-2016 | Ye Sha, Qing Zhu, Yuanxin Wan, Linling Li, Xiaoliang Wang, Gi Xue, Dongshan Zhou, Journal of Polymer Science Part A: Polymer Chemistry, 2016

ABSTRACT A new type of chain transfer agent used in reversible addition fragmentation chain transfer (RAFT) polymerization named 9‐anthracenylmethyl (4‐cyano‐4‐(N‐carbazylcarbodithioate) pentanoate) (ACCP) was synthesized with a total yield over 75% by the incorporation of both fluorescent ...

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Size‐controlled synthesis of soluble‐conjugated microporous polymer nanoparticles through sonogashira polycondensation in confined nanoreactors

19-Mar-2016 | Binlei Huang, Peng Zhao, Yanan Dai, Sheng Deng, Aiguo Hu, Journal of Polymer Science Part A: Polymer Chemistry, 2016

ABSTRACT Soluble conjugated polymeric nanoparticles were synthesized through Sonogashira polycondensation between different combinations of multifunctional alkynes and aryl halides in structurally well‐defined mesoporous reactors. The growth of the polymeric nanoparticles was controlled by the ...

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Dextran oxidized by a malaprade reaction shows main chain scission through a maillard reaction triggered by schiff base formation between aldehydes and amines

17-Mar-2016 | Wichchulada Chimpibul, Toshio Nagashima, Fumiaki Hayashi, Naoki Nakajima, Suong‐Hyu Hyon, Kazuaki Matsumura, Journal of Polymer Science Part A: Polymer Chemistry, 2016

ABSTRACT Although periodate‐oxidized dextran is widely used in biomedical applications, the degradation mechanism of oxidized dextran has not yet been elucidated. Herein, we propose a novel main chain scission mechanism of oxidized dextran triggered by reaction with amine. NMR analysis ...

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Synthesis and characterization of “Living” star‐shaped poly(N‐vinylcaprolactam) with four arms and carboxylic acid end groups

16-Mar-2016 | Norma A. Cortez‐Lemus, Angel Licea‐Claverie, Journal of Polymer Science Part A: Polymer Chemistry, 2016

ABSTRACT Poly(N‐vinylcaprolactam) (PNVCL) star‐shaped polymers with four arms and carboxyl end groups were synthesized by reversible addition–fragmentation chain transfer (RAFT) polymerization of N‐vinylcaprolactam (NVCL) employing a tetrafunctional trithiocarbonate as an R‐RAFT agent. The ...

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Double responsive copolymer hydrogels prepared by frontal polymerization

16-Mar-2016 | Luca Nuvoli, Davide Sanna, Valeria Alzari, Daniele Nuvoli, Vanna Sanna, Luca Malfatti, Alberto Mariani, Journal of Polymer Science Part A: Polymer Chemistry, 2016

ABSTRACT Frontal polymerization was successfully used to synthesize copolymer hydrogels of poly(N‐vinylcaprolactam‐co‐itaconic acid). All materials were characterized by response to stimuli (pH and/or temperature), depending on the itaconic acid content. Namely, relatively low amounts of this ...

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Multistimuli responsive ternary polyampholytes: Formation and crosslinking of coacervates

09-Mar-2016 | Allison Abdilla, Shanna Shi, Nicholas A.D. Burke, Harald D.H. Stöver, Journal of Polymer Science Part A: Polymer Chemistry, 2016

ABSTRACT A series of multiresponsive ternary polyampholytes were prepared by free‐radical copolymerization of N‐(3‐aminopropyl) methacrylamide hydrochloride (APM), methacrylic acid (MAA), and N‐(2‐hydroxyethyl) acrylamide (HEA). APM and MAA were held at 1:1 molar ratio, while the HEA monomer ...

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