Structure and Property of Microinjection Molded Poly(lactic acid) with High Degree of Long Chain Branching
dc.contributor.author | Zhao, Z.-G. | * |
dc.contributor.author | Yang, Q. | * |
dc.contributor.author | Coates, Philip D. | * |
dc.contributor.author | Whiteside, Benjamin R. | * |
dc.contributor.author | Kelly, Adrian L. | * |
dc.contributor.author | Huang, Y.-J. | * |
dc.contributor.author | Wu, P.-P. | * |
dc.date.accessioned | 2019-04-25T09:05:27Z | |
dc.date.available | 2019-04-25T09:05:27Z | |
dc.date.issued | 2018-08-22 | |
dc.identifier.citation | Zhao Z-G, Yang Q, Coates PD et al (2018) Structure and Property of Microinjection Molded Poly(lactic acid) with High Degree of Long Chain Branching. Industrial and Engineering Chemistry Research. 57(33): 11312-11322. | en_US |
dc.identifier.uri | http://hdl.handle.net/10454/16981 | |
dc.description | Yes | en_US |
dc.description.abstract | Long chain branches (LCB) are successfully grafted to linear poly(lactic acid) (PLA) using functional group reactions with pentaerythritol triacrylate (PETA) and tetraethylthiuram disulfide (TETDS). Results show a high branching degree of PLA (∼49.5%) can be effectively obtained with adding only 1 wt % PETA, contributing remarkably to enhancing strain hardening. The density of the nuclei formed during nonisothermal crystallization for LCB-PLA samples is markedly increased contrasted with PLA, resulting in significantly enhancing crystallinity from 13.3% to 41%, the onset crystallization temperature (∼20 °C), and the crystallization rate. Interestingly, compared with mini-injection molding, the elevated wall shear rates (and corresponding shear stresses) prove to be beneficial to the creation of special crystalline morphologies (β-crystal form) and oriented structures under microinjection molding conditions, resulting in the improvement of tensile strength by ∼45 MPa. | en_US |
dc.description.sponsorship | Chinese Scholarship Council | en_US |
dc.language.iso | en | en_US |
dc.rights | © 2018 ACS. This document is the Accepted Manuscript version of a Published Work that appeared in final form in the I&EC Research, copyright © American Chemical Society after peer-review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.iecr.8b01597. | en_US |
dc.subject | Polymer | en_US |
dc.subject | Microinjection moulding | en_US |
dc.title | Structure and Property of Microinjection Molded Poly(lactic acid) with High Degree of Long Chain Branching | en_US |
dc.status.refereed | Yes | en_US |
dc.date.application | 2018-07-27 | |
dc.type | Article | en_US |
dc.type.version | Accepted manuscript | en_US |
dc.identifier.doi | https://doi.org/10.1021/acs.iecr.8b01597 | |
refterms.dateFOA | 2019-04-25T09:05:59Z |