Stearyl methacrylate-grafted-chitosan nanoparticle as a nanofiller for PLA: Radiation-induced grafting and characterization

Autor:	Wanvimol Pasanphan, Thitirat Rattanawongwiboon, Kamonwon Haema
Rok vydání:	2014
Předmět:	Radiation Materials science technology industry and agriculture Nanoparticle engineering.material Grafting Methacrylate Lactic acid Chitosan chemistry.chemical_compound chemistry Chemical engineering Polymer chemistry engineering Particle Particle size Biopolymer
Zdroj:	Radiation Physics and Chemistry. 94:205-210
ISSN:	0969-806X
DOI:	10.1016/j.radphyschem.2013.05.039
Popis:	This paper reports a one-pot synthesis using radiation-induced grafting technique to modify biopolymer-based chitosan nanoparticles as a nanofiller for blending with poly(lactic acid) (PLA). Hydrophobic stearyl methacrylate (SMA) was grafted onto non-irradiated chitosan (CS0) and pre-irradiated chitosan with a γ-ray dose of 40 kGy (CS40) to obtain stearyl methacrylate-grafted-chitosan nanoparticles (SMA-g-CSNPs).The effects of the pre-irradiated CS, grafting doses and SMA concentrations on degree of grafting (DG) and particle formation were studied. FT-IR and XRD were used to characterize the chemical and packing structure of SMA-g-CSNPs. The particle formulation and size of SMA-g-CSNPs were observed by TEM and AFM. The spherical core-shell SMA-g-CSNPs with the size ranging from 50 to 140 nm were successfully prepared. The SMA-g-CSNPs from CS40 has higher DG and smaller particle size when compared with CS0. The SMA-g-CSNPs are able to improve the compatibility between CS and PLA.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::687e7b8efd0675da7d7467b23d5fb319 https://doi.org/10.1016/j.radphyschem.2013.05.039 Zobrazit plný text záznamu Full Text from ScienceDirect