A novel surface modification for calcium sulfate whisker used for reinforcement of poly(vinyl chloride) | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

3073617

Reference Type

Journal Article

Title

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

Author(s)

Yuan, W; Cui, J; Cai, Y; Xu, S

Year

2015

Is Peer Reviewed?

Yes

Journal

Journal of Polymer Research
ISSN: 1022-9760

Volume

Issue

Language

English

DOI

10.1007/s10965-015-0813-4

Web of Science Id

WOS:000360858600001

URL

http://://WOS:000360858600001
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Abstract

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.

Keywords

Poly(vinyl chloride) composites; Calcium sulfate whisker; Cross-linked poly(vinyl alcohol); Morphology; Mechanical properties