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RAFT polymerization kinetics and polymer characterization of P3HT rod–coil block copolymers

18-10-2014 | Melissa R. Kern, Stephen G. Boyes, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT Here an in‐depth analysis of reversible addition–fragmentation chain transfer (RAFT) polymerization kinetics is reported in order to provide better definition of poly(3‐hexylthiophene) (P3HT) rod–coil block copolymers thru a more thorough understanding of the RAFT polymerization of ...


Numerical modeling of multilayer film coextrusion with experimental validation

18-10-2014 | James Champion, M. Kieran Looney, Mark J.H. Simmons, Polymer Engineering and Science, 2014

Computational fluid dynamics (CFD) using a finite volume technique and the volume of fluid method of interface tracking is used to model the production of polyester‐based multilayered films via coextrusion. Experimental methods encompass both overall flow validation and secondary layer thickness ...


Solubilization of graphene flakes through covalent modification with well‐defined azido‐terminated poly(ε‐caprolactone)

18-10-2014 | Nabihah Abdullah, Kazuya Hatano, Daiki Ando, Masataka Kubo, Akira Koshio, Fumio Kokai, Journal of Applied Polymer Science, 2014

ABSTRACT A well‐defined poly(ε‐caprolactone) (PCL) with terminal azido group was prepared. Grafting‐on reaction between the azido‐terminated PCL (N3PCL) and ultrasonication‐assisted exfoliated graphene flakes (GF) was carried out to obtain PCL‐grafted‐GF (PCL‐g‐GF) which showed good ...


pH‐sensitive keratin‐based polymer hydrogel and its controllable drug‐release behavior

18-10-2014 | Juhua Guo, Sujuan Pan, Xiaochun Yin, Yu‐Feng He, Tao Li, Rong‐Min Wang, Journal of Applied Polymer Science, 2014

ABSTRACT Using feather keratin as biocompatible and inexpensive natural biopolymer and methacrylic acid as a functional monomer, we prepared a pH‐sensitive feather‐keratin‐based polymer hydrogel (FKPGel) with grafted copolymerization. The obtained FKPGel was characterized by Fourier transform ...


Development of fibrin conjugated chitosan/nano β‐TCP composite scaffolds with improved cell supportive property for bone tissue regeneration

18-10-2014 | Nadeem Siddiqui, Krishna Pramanik, Journal of Applied Polymer Science, 2014

ABSTRACT In the present study, an attempt has been made to improve cell supportive property of chitosan/nano beta tri‐calcium phosphate (β‐TCP) composite scaffolds by modification of scaffold surface with fibrin using ethyl‐3‐(3‐dimethylaminopropyl) carbodimide (EDC) as crosslinking agent. The ...


Exploring the role of stearic acid in modified zinc aluminum layered double hydroxides and their acrylonitrile butadiene rubber nanocomposites

18-10-2014 | Subramani Bhagavatheswaran Eshwaran, Debdipta Basu, Sankar Raman Vaikuntam, Burak Kutlu, Sven Wiessner, Amit Das, Ki ..., Journal of Applied Polymer Science, 2014

ABSTRACT The proposed study attempted to explore the role of stearic acid modification on the properties of zinc‐aluminum based layered double hydroxides (LDH) and their composites with acrylonitrile butadiene rubber (NBR). Three distinctive LDH systems were adapted for such comparison; an ...


Effect of interfacial area on heterogeneous free radical grafting of vinyl monomers in supercritical carbon dioxide: Grafting of acrylic acid on poly(vinylidenefluoride) nanoparticles

18-10-2014 | Sonia Lanzalaco, Onofrio Scialdone, Alessandro Galia, Journal of Applied Polymer Science, 2014

ABSTRACT The role of the polymer interfacial area on free radical grafting of acrylic acid (AA) onto poly(vinylidenefluoride) (PVDF) was studied at 65°C using supercritical carbon dioxide (scCO2) as a solvent and swelling agent, benzoylperoxide (BPO) as chemical initiator and PVDF ...


Preparation and evaluation of nonphosphate terpolymer as scale inhibitor and dispersant for Ca3(PO4)2, BaSO4, and Iron (III) hydroxide scales

18-10-2014 | Yunyun Bu, Yuming Zhou, Qingzhao Yao, Yiyi Chen, Wei Sun, Wendao Wu, Journal of Applied Polymer Science, 2014

ABSTRACT The polymeric scale inhibition and dispersion agents (PAYS) were prepared by graft copolymerization of acrylic acid, allylpolyethoxy carboxylate (APEY) and 2‐acrylamido‐2‐methyl‐propanesulfonic acid by using ammonium persulfate as a radical initiator in aqueous solution, among which ...


Conductive imidazolium side chain liquid crystal polyacrylates prepared from postpolymerization functionalization

18-10-2014 | Caihong Wang, Yong Wu, Shuai Tan, Ting Liang, Xiaohui Yang, Journal of Applied Polymer Science, 2014

ABSTRACT Hydroxide and tetrafluoroborate salts of imidazolium polyacrylates have been prepared from postpolymerization functionalization of a brominated precursor containing mesogenic side chains followed by anion exchange. The ionic polyacrylates possessed molecular weights in the range ...


Synthesis and application of streptavidin functionalized organosilica microparticles

18-10-2014 | Cailing Hou, Linxia Zhang, Yue Wang, Zhimin Wang, Journal of Applied Polymer Science, 2014

ABSTRACT This article reports on the chemical synthesis, functionalization and application of streptavidin (SA)‐coated organosilica microparticles. Thiol‐functionalized organosilica microparticles are synthesized via a two‐step approach involving acid‐catalyzed hydrolysis and condensation of ...


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