Films Based on Thermoplastic Starch Blended with Pine Resin Derivatives for Food Packaging

编号 020030603

推送时间 20210830

研究领域 林产化工 

年份 2021 

类型 期刊 

语种 英语

标题 Films Based on Thermoplastic Starch Blended with Pine Resin Derivatives for Food Packaging

来源期刊 Foods

期 第306期

发表时间 20210523

关键词 bioplastic;  thermoplastic starch;  pine resin;  gum rosin;  disintegration;  packaging; 

摘要 Completely biobased and biodegradable thermoplastic starch (TPS) based materials with a tunable performance were prepared for food packaging applications. Five blends were prepared by blending TPS with 10 wt%. of different pine resins derivatives: gum rosin (GR), disproportionated gum rosin (RD), maleic anhydride-modified gum rosin (CM), pentaerythritol ester of gum rosin (LF), and glycerol ester of gum rosin (UG). The materials were characterized in terms of thermo-mechanical behavior, surface wettability, color performance, water absorption, X-ray diffraction pattern, and disintegration under composting conditions. It was determined that pine resin derivatives increase the hydrophobicity of TPS and also increase the elastic component of TPS which stiffen the TPS structure. The water uptake study revealed that GR and LF were able to decrease the water absorption of TPS, while the rest of the resins kept the water uptake ability. X-ray diffraction analyses revealed that GR, CM, and RD restrain the aging of TPS after 24 months of aging. Finally, all TPS-resin blends were disintegrated under composting conditions during the thermophilic incubation period (90 days). Because of the TPS-resin blend's performance, the prepared materials are suitable for biodegradable rigid food packaging applications.

服务人员 尚玮姣

服务院士 宋湛谦

PDF文件 浏览全文