Surface Modified CaCO3 Nanoparticles with Silica via Sol-Gel Process Using in Poly(lactic acid) Nanocomposite

Autor:	Bawornkit Nekhamanurak, Nattakarn Hongsriphan, Pajaera Patanathabutr
Rok vydání:	2012
Předmět:	chemistry.chemical_classification Materials science Nanocomposite General Engineering Nanoparticle Izod impact strength test Polymer Lactic acid chemistry.chemical_compound Calcium carbonate chemistry Chemical engineering Composite material Elastic modulus Sol-gel
Zdroj:	Advanced Materials Research. :520-524
ISSN:	1662-8985
DOI:	10.4028/www.scientific.net/amr.488-489.520
Popis:	The goal of this work is to modify surface of calcium carbonate nanoparticles with silica (CaCO3@SiO2) via sol-gel process, and to investigate the influence of CaCO3@SiO2 on mechanical properties and fracture behavior of poly(lactic acid) nanocomposite. Modified CaCO3@SiO2 nanoparticles were prepared with different Si/Ca ratios. It is found that the Si:Ca wt% ratio was increased with respect to the Si:Ca mole ratio used in the reaction. Incorporating CaCO3@SiO2 of 5 wt% increased elastic modulus, %elongation at break and notched impact strength of PLA nanocomposites, which these properties of CaCO3@SiO2-PLA nanocomposite was increased with respect to increasing of SiO2 content on the surface of CaCO3 nano-particles. This implies that better compatibility between polymer matrix and filler was achieved after modification surface of CaCO3 with SiO2 layers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6fec9845ef9c430d29c1f885a592488b https://doi.org/10.4028/www.scientific.net/amr.488-489.520 Zobrazit plný text záznamu