Tuning the phase separated morphology and resulting electrical conductivity of carbon nanotube filled PαMSAN/PMMA blends by compatibilization with a random or block copolymer

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• 作者：Avanish Bharati^a ; Ruth Cardinaels^a ; ^b ; Tom Van der Donck^c ; Jin Won Seo^c ; Michael Wü ; bbenhorst^d ; Paula Moldenaers^a ; ^{paula.moldenaers@kuleuven.be}
• 关键词：Polymer blends ; Phase separation ; Compatibilization ; Copolymer architecture ; Electrical conductivity ; MWNTs
• 刊名：Polymer
• 出版年：2017
• 出版时间：13 January 2017
• 年：2017
• 卷：108
• 期：Complete
• 页码：483-492
• 全文大小：2955 K
• 卷排序：108

文摘

Compatibilizers' efficiency in tuning a phase separated blend morphology and the resulting conductivity was studied. Selective localization of MWNTs and compatibilization of phase separating blends by copolymers was the adopted approach. A study of the effects of copolymer architecture and molecular weight (Mw) was used to tailor the MWNT percolated network. A block copolymer is an effective compatibilizer irrespective of its Mw but a high Mw is required for the random copolymer. A double percolated network of MWNTs resulted in a pronounced increase in the conductivity at low MWNTs concentration.