caa a22 4500 463227832 CHVBK 20180405153232.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10853-007-1732-5 doi (NATIONALLICENCE)springer-10.1007/s10853-007-1732-5 Effect of coupling agents on the crystallinity and viscoelastic properties of composites of rice hull ash-filled polypropylene [Elektronische Daten] [Roya Khalil, Andrew Chryss, Margaret Jollands, Satinath Bhattacharya] This paper focuses on the application of silica rich, rice hull ash (RHA) from the rice industry as filler in polypropylene (PP). The dynamic rheological behaviour and the crystallinity of its composites with semi-amorphous polypropylene were used as performance indicators. The effect of coupling agents on RHA/PP compatibility was also investigated. Addition of RHA increased storage modulus (G′), and the onset (T co) and peak (T c) crystallinity temperatures, and decreased the degree of crystallinity of the system. Two coupling agents, maleated polypropylene (MAPP) and an amino functional silane, were used to improve the interfacial adhesion of RHA and PP. Addition of MAPP increased G′, T c and T co and the crystalline phase of the system. Addition of silane had mixed effects. It increased the rheological properties at higher concentrations, it increased T c and T co at all the concentrations and increased crystallinity at lower concentrations and decreased it at higher concentrations. Results from a thermogravimetric analyser were useful in revealing the mechanism by which silane bond to RHA and its effect on the rheology and crystallisation behaviour of the composites. Springer Science+Business Media, LLC, 2007 Khalil Roya Rheology and Materials Processing Centre, School of Civil and Chemical Engineering, RMIT University, 124 La trobe Street, 3000, Melbourne, VIC, Australia aut Chryss Andrew Rheology and Materials Processing Centre, School of Civil and Chemical Engineering, RMIT University, 124 La trobe Street, 3000, Melbourne, VIC, Australia aut Jollands Margaret Rheology and Materials Processing Centre, School of Civil and Chemical Engineering, RMIT University, 124 La trobe Street, 3000, Melbourne, VIC, Australia aut Bhattacharya Satinath Rheology and Materials Processing Centre, School of Civil and Chemical Engineering, RMIT University, 124 La trobe Street, 3000, Melbourne, VIC, Australia aut Journal of Materials Science Springer US; http://www.springer-ny.com 42/24(2007-12-01), 10219-10227 0022-2461 42:24<10219 2007 42 10853 https://doi.org/10.1007/s10853-007-1732-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1732-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Khalil Roya Rheology and Materials Processing Centre, School of Civil and Chemical Engineering, RMIT University, 124 La trobe Street, 3000, Melbourne, VIC, Australia aut NATIONALLICENCE 700 1- Chryss Andrew Rheology and Materials Processing Centre, School of Civil and Chemical Engineering, RMIT University, 124 La trobe Street, 3000, Melbourne, VIC, Australia aut NATIONALLICENCE 700 1- Jollands Margaret Rheology and Materials Processing Centre, School of Civil and Chemical Engineering, RMIT University, 124 La trobe Street, 3000, Melbourne, VIC, Australia aut NATIONALLICENCE 700 1- Bhattacharya Satinath Rheology and Materials Processing Centre, School of Civil and Chemical Engineering, RMIT University, 124 La trobe Street, 3000, Melbourne, VIC, Australia aut NATIONALLICENCE 773 0- Journal of Materials Science Springer US; http://www.springer-ny.com 42/24(2007-12-01), 10219-10227 0022-2461 42:24<10219 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer