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426 Aktuelle Fachpublikationen zum Thema temperature

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Synthesis of pH‐ and thermoresponsive poly(2‐n‐propyl‐2‐oxazoline) based copolymers

05.01.2016 | Marcel A. Boerman, Harry L. Van der Laan, Johan C. M. E. Bender, Richard Hoogenboom, John A. Jansen, Sander C. Leeuw ..., Journal of Polymer Science Part A: Polymer Chemistry, 2016

ABSTRACT Polymers that possess lower critical solution temperature behavior such as poly(2‐alkyl‐2‐oxazoline)s (PAOx) are interesting for their application as stimulus‐responsive materials, for example in the biomedical field. In this work, we discuss the scalable and controlled synthesis of a ...

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Electrosynthesis and electrochromic properties of free‐standing copolymer based on oligo(oxyethylene) cross‐linked 2,2’‐bithiophene and 3,4‐ethylenedioxythiophene

22.12.2015 | Yongjing Hu, Zhipeng Wang, Kaiwen Lin, Jingkun Xu, Xuemin Duan, Feng Zhao, Jian Hou, Fengxing Jiang, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT Oligo(oxyethylene) chains cross‐linked 2,2’‐bithiophene (BT‐E5‐BT) has been synthesized successfully. A free‐standing copolymer film based on BT‐E5‐BT and 3,4‐ethylenedioxythiophene (P(BT‐E5‐BT‐co‐EDOT)) has been synthesized by electrochemical polymerization. The electrical ...

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Synthesis and characterization of PDEAEMA‐based magneto‐nanogels: Preliminary results on the biocompatibility with cells of human peripheral blood

19.12.2015 | Aintzane Pikabea, Jose Ramos, Nikos Papachristos, Dimosthenis Stamopoulos, Jacqueline Forcada, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT Nanogels based on biocompatible, dual pH‐ and temperature‐sensitive poly(2‐(diethylamino)ethyl) methacrylate (PDEAEMA) have been successfully used as nanocontainers for the encapsulation of magnetite, Fe3O4 magnetic nanoparticles (MNPs). For this purpose, citric acid‐coated MNPs were ...

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Vinyl phenylboronic acid controlling co‐monomer for nitroxide mediated synthesis of thermoresponsive poly(2‐N morpholinoethyl methacrylate)

18.12.2015 | Xeniya Savelyeva, David Chondon, Milan Marić, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT Low concentrations of 4‐vinylphenylboronic acid (VPBA) were copolymerized with 2‐N‐morpholinoethyl methacrylate (MEMA) by nitroxide mediated polymerization using BlocBuilder™ unimolecular initiator at 80 to 90 °C. The MEMA/VPBA copolymerizations were performed at initial feed ...

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Autonomous conveyer gel driven by frontal polymerization

27.11.2015 | Xiao‐Qiao Wang, Nian Liu, Cai‐Feng Wang, Su Chen, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT Autonomous mechanical mass transportation for cargos on the microscale with no need of continuous external powering is of great scientific and technological interest due to their extensive applications. However, it is still challenging to create a self‐driven system applicable to ...

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Catalysts and temperature driven melt polycondensation reaction for helical poly(ester‐urethane)s based on natural L‐amino acids

27.11.2015 | Santhanaraj Anantharaj, Manickam Jayakannan, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT Catalyst and temperature driven melt polycondensation reaction was developed for natural L‐amino acid monomers to produce new classes of poly(ester‐urethane)s. Wide ranges of catalysts from alkali, alkali earth metal, transition metal and lanthanides were developed for the ...

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Synthesis and UCST‐type phase behavior of OEGylated poly(γ‐benzyl‐l‐glutamate) in organic media

25.11.2015 | Mengxiang Zhu, Yanzhi Xu, Chenglong Ge, Ying Ling, Haoyu Tang, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT A series of OEGylated poly(γ‐benzyl‐l‐glutamate) with different oligo‐ethylene‐glycol side‐chain length, molecular weight (MW = 8.4 × 103 to 13.5 × 104) and narrow molecular weight distribution (PDI = 1.12–1.19) can be readily prepared from triethylamine initiated ring‐opening ...

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Breathable rubbery skin protectors: Design, synthesis, characterization, and properties of cyanoacrylated silicone rubber networks

25.11.2015 | Amalia Szanka, Istvan Szanka, Joseph P. Kennedy, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT We extended our investigations of rubbery wound closure adhesives and created novel flexible networks by crosslinking cyanoacrylated silicone rubbers (i.e., commercial methylhydrosiloxane‐dimethylsiloxane copolymers, PMHS‐co‐PDMS) with N,N‐dimethyl‐p‐toluidine in tetrahydrofuran and ...

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Preparation and properties of thermoresponsive and conductive composite fibers with core‐sheath structure

23.11.2015 | Mei‐Fei Lin, Trong‐Ming Don, Fang‐Tzu Chang, Shih‐Ru Huang, Wen‐Yen Chiu, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT In this research, thermoresponsive and conductive fibers with core‐sheath structure were fabricated by coaxial electrospinning. For preparing the spinning sheath solution, poly‐(N‐isopropylacrylamide‐co‐N‐methylolacrylamide) (PNN) copolymer having thermoresponsive and cross‐linkable ...

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Synthesis of versatile poly(PMMA‐b‐VI) macromonomer‐based hydrogels via infrared laser ignited frontal polymerization

13.11.2015 | Ting Chen, Yang Li, Sheng‐Yang Yang, Cai‐Feng Wang, Su Chen, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT In this work, poly((PMMA‐b‐VI)‐co‐AA) (MMA = methyl methacrylate; VI = 1‐vinylimidazole; AA = acrylic acid) hydrogels and poly((PMMA‐b‐VI)‐co‐AA)/TPU (TPU = thermoplastic polyurethane) IPN (interpenetrating polymer networks) hydrogels have been fabricated via versatile infrared laser ...

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