Publication:
New insights into the relationship between network structure and strain-induced crystallization in un-vulcanized and vulcanized natural rubber by synchrotron X-ray diffraction

1

Issued Date

2009-04-24

Resource Type

Article

ISSN

00323861

DOI

10.1016/j.polymer.2009.03.001

Other identifier(s)

2-s2.0-64049114111

Rights

Mahidol University

Rights Holder(s)

SCOPUS

Bibliographic Citation

Polymer. Vol.50, No.9 (2009), 2142-2148

Suggested Citation

Shigeyuki Toki, Benjamin S. Hsiao, Sureerut Amnuaypornsri, Jitladda Sakdapipanich New insights into the relationship between network structure and strain-induced crystallization in un-vulcanized and vulcanized natural rubber by synchrotron X-ray diffraction. Polymer. Vol.50, No.9 (2009), 2142-2148. doi:10.1016/j.polymer.2009.03.001 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/27425

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Title

New insights into the relationship between network structure and strain-induced crystallization in un-vulcanized and vulcanized natural rubber by synchrotron X-ray diffraction

Author(s)

Shigeyuki Toki
 Benjamin S. Hsiao
 Sureerut Amnuaypornsri
 Jitladda Sakdapipanich

Other Contributor(s)

Stony Brook University
 Mahidol University

Abstract

The relationship between the network structure and strain-induced crystallization in un-vulcanized as well as vulcanized natural rubbers (NR) and synthetic poly-isoprene rubbers (IR) was investigated via synchrotron wide-angle X-ray diffraction (WAXD) technique. It was found that the presence of a naturally occurring network structure formed by natural components in un-vulcanized NR significantly facilitates strain-induced crystallization and enhances modulus and tensile strength. The stress-strain relation in vulcanized NR is due to the combined effect of chemical and naturally occurring networks. The weakness of naturally occurring network against stress and temperature suggests that vulcanized NR has additional relaxation mechanism due to naturally occurring network. The superior mechanical properties in NR compared with IR are mainly due to the existence of naturally occurring network structure. © 2009 Elsevier Ltd. All rights reserved.

Keyword(s)

Chemistry
 Materials Science

Availability

URI

https://repository.li.mahidol.ac.th/handle/123456789/27425

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