Publication: Crystallisation behaviour and transparency of poly(lactic acid) nucleated with dimethylbenzylidene sorbitol
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Issued Date
2018
Resource Type
File Type
application/pdf
ISSN
14658011
Other identifier(s)
2-s2.0-85043719831
Rights Holder(s)
มหาวิทยาลัยศรีนครินทรวิโรฒ
Bibliographic Citation
Plastics, Rubber and Composites. Vol 47, No.4 (2018), p.147-155
Suggested Citation
Petchwattana N., Naknaen P., Sanetuntikul J., Narupai B. Crystallisation behaviour and transparency of poly(lactic acid) nucleated with dimethylbenzylidene sorbitol. Plastics, Rubber and Composites. Vol 47, No.4 (2018), p.147-155. doi:10.1080/14658011.2018.1447338 Retrieved from: https://hdl.handle.net/20.500.14740/5856
Author(s)
Abstract
In this paper, dimethylbenzylidene sorbitol (DMBS) was applied to poly(lactic acid) (PLA) as a nucleating and clarifying agents. Eight level concentrations, from 0.25 to 10 wt-%, were added and measured some changes in the thermal, mechanical, physical and morphological properties. Experimental results revealed that the nucleated PLA crystallised earlier together with the reductions of the crystallisation temperature (Tc) at all DMBS concentrations, while the glass transition temperature (Tg) reduced by around 10°C. The degree of crystallinity (Xc) increased from 1.48 to 16.6% corresponding to the decreased crystallisation time (tc) from more than 40 to less than 5 min at 100°C. The nucleated PLA maintained its clarity at all DMBS concentrations, with reductions of the haze value from around 36–29%. The tensile modulus and tensile strength increased slightly with the content of DMBS up to 1.5 wt-%. Beyond this content, they dropped slightly. © 2018 Institute of Materials, Minerals and Mining Published by Taylor & Francis on behalf of the Institute.