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Pressure, the Critical Factor Governing Final Microstructures of Cured Rubber/Clay Nanocomposites

2005; Wiley; Volume: 26; Issue: 11 Linguagem: Inglês

10.1002/marc.200500077

1521-3927

Yurong Liang, Yonglai Lu, You-Ping Wu, Yong Ma, Liqun Zhang,

Polymer crystallization and properties

Abstract Summary: The changes in both local intercalated structures and spatial distribution states of organoclays (OC) in rubber/clay nanocomposites (RCNs) caused by vulcanization were monitored by using WAXD and TEM, and the corresponding mechanism was studied. It was first discovered that the pressure was the critical factor determining the final microstructures of cured RCNs. The cured RCNs with fine dispersion could be obtained through vulcanization under atmospheric pressure. TEM images of SBR/clay nanocomposites cured at 15 MPa pressure (left) and atmospheric pressure (right). magnified image TEM images of SBR/clay nanocomposites cured at 15 MPa pressure (left) and atmospheric pressure (right).