U.S.-Bulgaria Cooperative Research on Environmentally Friendly Manufacturing of Polymeric Materials from Natural Wastes

小行星9514149 这个美国-保加利亚合作研究奖将研究“从中性废物中无害环境地制造聚合材料”。“主要研究人员是J. E. 辛辛那提大学的马克和B博士。S.索菲亚大学的法基洛夫。 理论发展表明，通过干燥半刚性链的溶胀网络，当它们处于变形状态时，可以获得异常良好的机械性能。 这种方法最近被证明用于纤维素酯和醚以及用于一些聚（正烷基异氰酸酯），产生杨氏模量和拉伸强度增加4至5倍。 拟议的研究旨在将这些成功的实验扩展到高度可降解明胶形式的胶原蛋白。 这种材料特别适合于开发这样的技术，原因有很多，包括：（1）使用非常温和的加工条件从天然废物生产的可能性;（2）水溶性;（3）生物降解性，没有污染问题;（4）低成本;和（5）作为食品的可消费性。 期望开发实验室规模的技术，用于制造具有改进的机械性能的明胶纤维和薄膜，这些明胶纤维和薄膜可能用作商品材料和商品。 根据获得的结果，可以尝试将优化技术商业化。 这项化学研究实现了汇集美国和保加利亚领先专家的计划目标，在平等，互惠和互利的基础上，在强烈的共同利益和能力领域联合收割机互补努力和能力。 ***

9514149 Mark This U.S.-Bulgaria Cooperative Research award will study "Environmentally Friendly Manufacturing of Polymeric Materials from Neutral Wastes." The principal researchers are Dr. J. E. Mark of the University of Cincinnati, and Dr. B. S. Fakirov of Sofia University. Theoretical developments indicate that unusually good mechanical properties can be obtained by drying swollen networks of semi-rigid chains while they are in the deformed state. This approach was recently demonstrated for cellulosic esters and ethers and for some poly(n- alkylisiocyanates), yielding increases in Young's modulus and tensile strength by factors of 4 to 5. The proposed study aims at extension of these successful experiments to collagen in the form of highly-degradable gelatin. This material is particularly suited for the development of such techniques for a number of reasons, including: (1) possibility of production from natural wastes using very mild processing conditions; (2) water solubility; (3) biodegradability, with absence of pollution problems; (4) low cost; and (5) consumability as a food product. The expectation is to develop laboratory-scale technology for manufacturing gelatin fibers and films with improved mechanical properties potentially usable as commodity materials and goods. Depending on the results obtained, an attempt could be made to commercialize the optimized technology. This research in chemistry fulfills the program objectives of bringing together leading experts in the U.S. and Bulgaria to combine complementary efforts and capabilities in areas of strong mutual interest and competence on the basis of equality, reciprocity, and mutuality of benefit. ***