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http://dx.doi.org/10.3740/MRSK.2016.26.9.478

Synthesis of Poly Imide/α'ω'-di Poly Acrylamide (3-Mercaptopropyl) Trimethoxysilane Terminated Copolymer  

Min, Jun Ho (Department of Polymer Engineering, Pukyong National University)
Park, Chan Young (Department of Polymer Engineering, Pukyong National University)
Min, Seong Kee (Department of Polymer Engineering, Pukyong National University)
Publication Information
Korean Journal of Materials Research / v.26, no.9, 2016 , pp. 478-485 More about this Journal
Abstract
An amide group was introduced to restrain the cohesion of silica nano-particles and copolymerized with polyamic acid. Amide block copolymers were prepared using silica and (3-mercaptopropyl) trimethoxysilane (MPTMS) with a siloxane group, using 2, 6-Lutidine as a catalyst. Amide block polymers and copolymers were synthesized via ATRP after brominating pyromellitic dianhydride (PMDA) and polyamic acid of methylene diphenyl diamine (MDA) using ${\alpha}$-bromo isobutyryl bromide. Characteristic peaks of copolymer with amide and imide groups and patterns of amorphous polymers were studied using FT-IR and XRD analyses; an analysis of the surface characteristic groups was conducted via XPS. Changes in the thermal properties were examined through DSC and TGA; solubility for solvents was also studied.
Keywords
DABCO; polyamide-imide; polyamic acid; siloxane group;
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