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...

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Autores principales:	Bowen Lin, Chengqiang Li, Fangping Chen, Changsheng Liu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	lignin film PBAT high starch content ultraviolet aging resistance Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/be80836b22994c2f87ee8db766f01b10
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spelling	oai:doaj.org-article:be80836b22994c2f87ee8db766f01b102021-11-11T18:48:03ZContinuous Blown Film Preparation of High Starch Content Composite Films with High Ultraviolet Aging Resistance and Excellent Mechanical Properties10.3390/polym132138132073-4360https://doaj.org/article/be80836b22994c2f87ee8db766f01b102021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/21/3813https://doaj.org/toc/2073-4360Starch/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.Bowen LinChengqiang LiFangping ChenChangsheng LiuMDPI AGarticleligninfilmPBAThigh starch contentultraviolet aging resistanceOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3813, p 3813 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	lignin film PBAT high starch content ultraviolet aging resistance Organic chemistry QD241-441
spellingShingle	lignin film PBAT high starch content ultraviolet aging resistance Organic chemistry QD241-441 Bowen Lin Chengqiang Li Fangping Chen Changsheng Liu Continuous Blown Film Preparation of High Starch Content Composite Films with High Ultraviolet Aging Resistance and Excellent Mechanical Properties
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	article
author	Bowen Lin Chengqiang Li Fangping Chen Changsheng Liu
author_facet	Bowen Lin Chengqiang Li Fangping Chen Changsheng Liu
author_sort	Bowen Lin
title	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_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_sort	continuous blown film preparation of high starch content composite films with high ultraviolet aging resistance and excellent mechanical properties
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/be80836b22994c2f87ee8db766f01b10
work_keys_str_mv	AT bowenlin continuousblownfilmpreparationofhighstarchcontentcompositefilmswithhighultravioletagingresistanceandexcellentmechanicalproperties AT chengqiangli continuousblownfilmpreparationofhighstarchcontentcompositefilmswithhighultravioletagingresistanceandexcellentmechanicalproperties AT fangpingchen continuousblownfilmpreparationofhighstarchcontentcompositefilmswithhighultravioletagingresistanceandexcellentmechanicalproperties AT changshengliu continuousblownfilmpreparationofhighstarchcontentcompositefilmswithhighultravioletagingresistanceandexcellentmechanicalproperties
_version_	1718431725104660480

Continuous Blown Film Preparation of High Starch Content Composite Films with High Ultraviolet Aging Resistance and Excellent Mechanical Properties

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