title: Preparation and characterization of poly(lactic acid)/starch composites toughened with epoxidized soybean oil.
abstract: Blends of entirely bio-sourced polymers, namely polylactide (PLA) and starch, have been melt-compounded by lab-scale co-extruder with epoxidized soybean oil (ESO) as a reactive compatibilizer. The starch granules were grafted with the maleic anhydride (MA) to enhance its reactivity with ESO. The ready reactions between the epoxy groups on ESO, the MA groups on MA-grafted starch (MGST) and the end carboxylic acid groups of PLA brought blending components together and formed a compatible compound. An elongation at break (EB) of 140% was obtained in the blend of PLA/MGST/ESO (80/10/10), increased from 5% of a pure PLA. The grafting content of the MA on the starch granules primarily determined the compatibility and properties of the ternary blends, which was also affected by the relative amount of MGST and ESO.
authors.affiliation: Ningbo Key Laboratory of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, PR China.
authors.forename: Zhu
authors.initials: Z
authors.lastname: Xiong
authors.forename: Yong
authors.initials: Y
authors.lastname: Yang
authors.forename: Jianxiang
authors.initials: J
authors.lastname: Feng
authors.forename: Xiaomin
authors.initials: X
authors.lastname: Zhang
authors.forename: Chuanzhi
authors.initials: C
authors.lastname: Zhang
authors.forename: Zhaobin
authors.initials: Z
authors.lastname: Tang
authors.forename: Jin
authors.initials: J
authors.lastname: Zhu
mesh_terms: D019344:Lactic Acid / Q000138:chemical synthesis / Q000737:chemistry; D008299:Maleic Anhydrides / Q000737:chemistry; D011091:Polyesters; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry; D013024:Soybean Oil / Q000737:chemistry*; D013213:Starch / Q000138:chemical synthesis / Q000737:chemistry; D013696:Temperature; D013718:Tensile Strength
chemical_list: D008299:Maleic Anhydrides; D011091:Polyesters; D011108:Polymers; C554142:epoxidized soybean oil; D019344:Lactic Acid; C033616:poly(lactide); D013024:Soybean Oil; D013213:Starch