Modification of Jute Fibers with Polystyrene via Atom Transfer Radical Polymerization
详细信息 查看全文
- 作者：David Plackett ; Katja Jankova ; Helge Egsgaard ; and S
//pubs.acs.org/images/gifchars/oslash.gif" border="0">ren Hvilsted
- 刊名：Biomacromolecules
- 出版年：2005
- 出版时间：September 2005
- 年：2005
- 卷：6
- 期：5
- 页码：2474 - 2484
- 全文大小：455K
- 年卷期：v.6,no.5(September 2005)
- ISSN：1526-4602
文摘
Atom transfer radical polymerization (ATRP) was investigated as a method of covalently bonding polystyreneto jute (Corchorus capsularis) and as a possible approach to fiber composites with enhanced properties.Jute fibers were modified with a brominated initiator and subsequently ATRP modified to attach polystyreneand then examined using SEM, DSC, TGA, FTIR, XPS, elemental analysis, and Py-GC-MS. These techniquesconfirmed that polystyrene had been covalently bound to the fibers and consequently ATRP-modified jutefiber mats were used to prepare hot-pressed polystyrene composites. Composite specimens were tensiletested and fracture surfaces examined using SEM. Although SEM examination suggested different fracturemodes between unmodified fiber and ATRP-modified samples, the tensile strength of modified sampleswas slightly lower on average than that of unmodified samples. For fiber composite applications, we concludethat further optimization of the ATRP method is required, possibly targeting higher and more uniform loadingof polystyrene on the fibers.