TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

Highly exfoliated natural rubber/Clay composites by "propping-open procedure": The influence of fatty-acid chain length on exfoliation

Tutkimustuotosvertaisarvioitu

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut369-383
Sivumäärä15
JulkaisuMacromolecular Materials and Engineering
Vuosikerta297
Numero4
DOI - pysyväislinkit
TilaJulkaistu - huhtikuuta 2012
OKM-julkaisutyyppiA1 Alkuperäisartikkeli

Tiivistelmä

A high degree of exfoliation of MMT in NR is achieved by using the so-called "propping-open approach" in which a stepwise expansion of the interlayer spacing of MMT takes place. The nanostructure is characterized by WAXD and TEM which indicate different extents of clay dispersion depending on the fatty-acid chain length. Curing kinetics of different nanocomposites is studied and interestingly low activation energies of the vulcanization process are observed in the case of NR/EMMT nanocomposites. The incorporation of EMMT dramatically affects composite properties whereas DMA indicates significant reduction of tan δ peak height and the tensile strength approximately doubles from 14 to 30 MPa with only 5 phr EMMT.