Preparation and mechanical properties of poly(vinyl chloride)/bamboo flour composites with a novel block copolymer as a coupling agent

作者：Kim Jeong Yeol; Peck Jong Hyeon^*; Hwang Seok Ho; Hong Juseok; Hong Sung Chul; Huh Wansoo; Lee Sang Won

来源：Journal of Applied Polymer Science, 2008, 108(4): 2654-2659.

DOI：10.1002/app.27759

• block copolymers
• compatibility
• compatibilization
• composites
• poly(vinyl chloride) (PVC)

To improve the interfacial adhesion between poly(vinyl chloride) (PVC) and bamboo flour in PVC/bamboo flour composites, a novel coupling agent, poly(styrene-co-maleic anhydride)-block-poly(styrene-coacrylonitrile) {P[(SMA)-b-(SAN)]}, was synthesized through living free-radical polymerization in a one-pot reaction. P[(SMA)-b-(SAN)l was synthesized by a nitroxide-mediated polymerization technique in the presence of 2,2,6,6-tetramethylpiperidin-l-oxyl with azobisisobutyronitrile. The conversion of maleic anhydride (>99%) and styrene (>65%) was relatively high and yielded P[(SMA)-b-(SAN)l with a narrow molecular weight distribution (weight-average molecular weight/number-average molecular weight <138). PVC was blended with bamboo flours in the presence of the synthesized coupling agent with a two-roll mill. P[(SMA)-b-(SAN)] was added to the PVC matrix at a concentration of 55 or 20 wt%. As the content of P[(SMA)-b-(SAN)] in the wood-polymer composite increased, improved morphological and mechanical behaviors were observed.

• 出版日期2008-5-15