Cargando…
Continuous Blown Film Preparation of High Starch Content Composite Films with High Ultraviolet Aging Resistance and Excellent Mechanical Properties
Starch/PBAT blown films with high ultraviolet aging resistance and excellent mechanical properties were prepared by introducing lignin with polyurethane prepolymer (PUP) as a starch modifier and physical compatibilizer and 4,4′–methylene diphenyl diisocyanate (MDI) as a crosslinker. Starch was modif...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8588195/ https://www.ncbi.nlm.nih.gov/pubmed/34771370 http://dx.doi.org/10.3390/polym13213813 |
_version_ | 1784598385394712576 |
---|---|
author | Lin, Bowen Li, Chengqiang Chen, Fangping Liu, Changsheng |
author_facet | Lin, Bowen Li, Chengqiang Chen, Fangping Liu, Changsheng |
author_sort | Lin, Bowen |
collection | PubMed |
description | Starch/PBAT blown films with high ultraviolet aging resistance and excellent mechanical properties were prepared by introducing lignin with polyurethane prepolymer (PUP) as a starch modifier and physical compatibilizer and 4,4′–methylene diphenyl diisocyanate (MDI) as a crosslinker. Starch was modified by reacting the NCO groups of the PUP with the OH groups of the starch to form a carbamate bond. The mechanical properties, hydrophobic properties, ultraviolet barrier, ultraviolet aging properties and microscopic morphology of starch/PBAT films with different contents of lignin were investigated. The results showed that the starch/PBAT films were blown continuously. The addition of lignin did not decrease the mechanical properties. On the contrary, the film with 1% lignin possessed the excellent mechanical properties with longitudinal tensile strength of 15.87 MPa and the elongation at a break of 602.21%. In addition, the higher the lignin content, the better the UV blocking effect. The introduction of lignin did not affect the crystalline properties but improved the hydrophilic properties and sealing strength of the high starch content composite films. |
format | Online Article Text |
id | pubmed-8588195 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-85881952021-11-13 Continuous Blown Film Preparation of High Starch Content Composite Films with High Ultraviolet Aging Resistance and Excellent Mechanical Properties Lin, Bowen Li, Chengqiang Chen, Fangping Liu, Changsheng Polymers (Basel) Article Starch/PBAT blown films with high ultraviolet aging resistance and excellent mechanical properties were prepared by introducing lignin with polyurethane prepolymer (PUP) as a starch modifier and physical compatibilizer and 4,4′–methylene diphenyl diisocyanate (MDI) as a crosslinker. Starch was modified by reacting the NCO groups of the PUP with the OH groups of the starch to form a carbamate bond. The mechanical properties, hydrophobic properties, ultraviolet barrier, ultraviolet aging properties and microscopic morphology of starch/PBAT films with different contents of lignin were investigated. The results showed that the starch/PBAT films were blown continuously. The addition of lignin did not decrease the mechanical properties. On the contrary, the film with 1% lignin possessed the excellent mechanical properties with longitudinal tensile strength of 15.87 MPa and the elongation at a break of 602.21%. In addition, the higher the lignin content, the better the UV blocking effect. The introduction of lignin did not affect the crystalline properties but improved the hydrophilic properties and sealing strength of the high starch content composite films. MDPI 2021-11-04 /pmc/articles/PMC8588195/ /pubmed/34771370 http://dx.doi.org/10.3390/polym13213813 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Lin, Bowen Li, Chengqiang Chen, Fangping Liu, Changsheng Continuous Blown Film Preparation of High Starch Content Composite Films with High Ultraviolet Aging Resistance and Excellent Mechanical Properties |
title | Continuous Blown Film Preparation of High Starch Content Composite Films with High Ultraviolet Aging Resistance and Excellent Mechanical Properties |
title_full | Continuous Blown Film Preparation of High Starch Content Composite Films with High Ultraviolet Aging Resistance and Excellent Mechanical Properties |
title_fullStr | Continuous Blown Film Preparation of High Starch Content Composite Films with High Ultraviolet Aging Resistance and Excellent Mechanical Properties |
title_full_unstemmed | Continuous Blown Film Preparation of High Starch Content Composite Films with High Ultraviolet Aging Resistance and Excellent Mechanical Properties |
title_short | Continuous Blown Film Preparation of High Starch Content Composite Films with High Ultraviolet Aging Resistance and Excellent Mechanical Properties |
title_sort | continuous blown film preparation of high starch content composite films with high ultraviolet aging resistance and excellent mechanical properties |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8588195/ https://www.ncbi.nlm.nih.gov/pubmed/34771370 http://dx.doi.org/10.3390/polym13213813 |
work_keys_str_mv | AT linbowen continuousblownfilmpreparationofhighstarchcontentcompositefilmswithhighultravioletagingresistanceandexcellentmechanicalproperties AT lichengqiang continuousblownfilmpreparationofhighstarchcontentcompositefilmswithhighultravioletagingresistanceandexcellentmechanicalproperties AT chenfangping continuousblownfilmpreparationofhighstarchcontentcompositefilmswithhighultravioletagingresistanceandexcellentmechanicalproperties AT liuchangsheng continuousblownfilmpreparationofhighstarchcontentcompositefilmswithhighultravioletagingresistanceandexcellentmechanicalproperties |