文献类型：期刊文献

英文题名：A novel surface modification for calcium sulfate whisker used for reinforcement of poly(vinyl chloride)

作者：Yuan, Wenjin[1];Cui, Jiayang[1];Cai, Yangben[1];Xu, Shiai[1,2]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Lab Ultrafine Mat Minist Educ, Shanghai Key Lab Adv Polymer Mat, Shanghai 200237, Peoples R China;[2]Qinghai Univ, Chem Engn Coll, Xining 810016, Peoples R China

年份：2015

卷号：22

期号：9

外文期刊名：JOURNAL OF POLYMER RESEARCH

收录：;EI(收录号：20153301169249);WOS:【SCI-EXPANDED(收录号:WOS:000360858600001)】；

基金：We gratefully acknowledge the financial support of Qinghai Science & Technology Department and the Fundamental Research Funds for the Central University.

语种：英文

外文关键词：Poly(vinyl chloride) composites; Calcium sulfate whisker; Cross-linked poly(vinyl alcohol); Morphology; Mechanical properties

摘要：A novel technique is developed in this study to modify the surface of calcium sulfate whisker (CSW) for the preparation of high-performance CSW/poly(vinyl chloride) (PVC) composites. The CSW coated with poly(vinyl alcohol) (PVA) and then cross-linked by glutaraldehyde is used to strengthen PVC, and the surface morphology and mechanical properties of CSW/PVC composites are investigated. It shows that the mechanical properties of the cross-linked PVA modified CSW/PVC (cPVA@CSW/PVC) composites are significantly improved, their yield strength, breaking strength, tensile modulus and elongation at break are 65.7 MPa, 53.5 MPa, 1772 MPa and 225 %, with an increase of 7.2, 13.1, 7.6 and 8.2 % as compared with that of the unmodified CSW/PVC composites, respectively. The improvement in the mechanical properties can be attributed to the strong interfacial adhesion between cPVA@CSW and PVC matrix, because the modified CSW has abundant hydroxyl groups that can produce a strong interaction with PVC. This method is simple and inexpensive, and can be applied in large scale.