当前位置：
X-MOL 学术
›
Biomacromolecules
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
PBS-Based Green Copolymer as an Efficient Compatibilizer in Thermoplastic Inedible Wheat Flour/Poly(butylene succinate) Blends.
Biomacromolecules ( IF 5.5 ) Pub Date : 2020-06-30 , DOI: 10.1021/acs.biomac.0c00701 Michelina Soccio 1 , Franco Dominici 2 , Silvia Quattrosoldi 1 , Francesca Luzi 2 , Andrea Munari 1 , Luigi Torre 2 , Nadia Lotti 1 , Debora Puglia 2
Biomacromolecules ( IF 5.5 ) Pub Date : 2020-06-30 , DOI: 10.1021/acs.biomac.0c00701 Michelina Soccio 1 , Franco Dominici 2 , Silvia Quattrosoldi 1 , Francesca Luzi 2 , Andrea Munari 1 , Luigi Torre 2 , Nadia Lotti 1 , Debora Puglia 2
Affiliation
|
Considering the current context of research aiming at proposing new bioplastics with low costs and properties similar to fossil-based commodities currently on the market, in the present work, a hybrid blend containing a prevalent amount of cheap inedible cereal flour (70 wt %) and poly(butylene succinate) (PBS) (30 wt %) has been prepared by a simple, eco-friendly, and low-cost processing methodology. In order to improve the interfacial tension and enhance the adhesion between the different phases at the solid state, with consequent improvement in microstructure uniformity and in material mechanical and adhesive performance, the PBS fraction in the blend was replaced with variable amounts (0–25 wt %) of PBS-based green copolymer, which exerted the function of a compatibilizer. The copolymer is characterized by an ad hoc chemical structure, containing six-carbon aliphatic rings, also present in the flour starch structure. The two synthetic polyesters obtained through two-stage melt polycondensation have been deeply characterized from the molecular, thermal, and mechanical points of view. Copolymerization deeply impacts the polymer final properties, the crystallizing ability, and stiffness of the PBS homopolymer being reduced. Also, the prepared ternary blends were deeply investigated in terms of microstructure, thermal, and mechanical properties. Lastly, both pure blend components and ternary blends were subjected to disintegration experiments under composting conditions. The results obtained proved how effective was the compatibilizer action of the copolymer, as evidenced by the investigation conducted on morphology and mechanical properties. Specifically, the mixtures with 15 and 20 wt % Co appeared to be characterized by the best mechanical performance, showing a progressive increase of deformation while preserving good values of elastic modulus and stress. The disintegration rate in compost was found to be higher for the lower amount of copolymer in the ternary blend. However, after 90 days of incubation, the blend richest in copolymer content lost 62% of weight.
中文翻译：
PBS基绿色共聚物在热塑性不可食用小麦粉/聚丁二酸丁二醇酯混合物中的高效相容剂。
考虑到当前的研究目的是提出一种低成本和与市场上基于化石的商品类似的特性的新型生物塑料，在本研究中，一种杂种共混物包含大量廉价的不可食用谷物粉（70 wt％）和聚丁二酸丁二醇酯（PBS）（30 wt％）已通过一种简单，环保且低成本的加工方法制备。为了改善界面张力并增强固态不同相之间的粘附力，从而改善了微观结构的均匀性以及材料的机械和粘合性能，共混物中的PBS组分被可变量（0–25 wt ％的PBS基绿色共聚物，其发挥了增容剂的功能。该共聚物的特点是具有特殊的化学结构，面粉中的淀粉结构中也含有六碳脂族环。通过两步熔融缩聚获得的两种合成聚酯已从分子，热和机械的角度进行了深入表征。共聚深刻影响聚合物的最终性能，结晶能力和PBS均聚物的刚度降低。另外，对制备的三元共混物在微观结构，热学和机械性能方面进行了深入研究。最后，在堆肥条件下，将纯掺合物组分和三元掺合物都进行崩解实验。对形态和机械性能的研究证明，所获得的结果证明了共聚物的增容作用是多么有效。特别，具有15和20 wt％的Co的混合物似乎具有最佳的机械性能，表现出变形的逐渐增加，同时保留了良好的弹性模量和应力值。对于三元共混物中较低的共聚物量，发现堆肥中的崩解速率较高。但是，孵育90天后，共聚物含量最高的共混物损失了62％的重量。
更新日期：2020-08-10
中文翻译：
PBS基绿色共聚物在热塑性不可食用小麦粉/聚丁二酸丁二醇酯混合物中的高效相容剂。
考虑到当前的研究目的是提出一种低成本和与市场上基于化石的商品类似的特性的新型生物塑料，在本研究中，一种杂种共混物包含大量廉价的不可食用谷物粉（70 wt％）和聚丁二酸丁二醇酯（PBS）（30 wt％）已通过一种简单，环保且低成本的加工方法制备。为了改善界面张力并增强固态不同相之间的粘附力，从而改善了微观结构的均匀性以及材料的机械和粘合性能，共混物中的PBS组分被可变量（0–25 wt ％的PBS基绿色共聚物，其发挥了增容剂的功能。该共聚物的特点是具有特殊的化学结构，面粉中的淀粉结构中也含有六碳脂族环。通过两步熔融缩聚获得的两种合成聚酯已从分子，热和机械的角度进行了深入表征。共聚深刻影响聚合物的最终性能，结晶能力和PBS均聚物的刚度降低。另外，对制备的三元共混物在微观结构，热学和机械性能方面进行了深入研究。最后，在堆肥条件下，将纯掺合物组分和三元掺合物都进行崩解实验。对形态和机械性能的研究证明，所获得的结果证明了共聚物的增容作用是多么有效。特别，具有15和20 wt％的Co的混合物似乎具有最佳的机械性能，表现出变形的逐渐增加，同时保留了良好的弹性模量和应力值。对于三元共混物中较低的共聚物量，发现堆肥中的崩解速率较高。但是，孵育90天后，共聚物含量最高的共混物损失了62％的重量。
京公网安备 11010802027423号