RAFT thermoplastics from glycerol: a biopolymer for development of sustainable wood adhesives
RAFT thermoplastics from glycerol: a biopolymer for development of sustainable wood adhesives
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DOI：
10.1039/d0gc01831g
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发表时间：
2020-09
期刊：
影响因子：
9.8
通讯作者：
Michael J. Forrester;A. T. Becker;Austin Hohmann;Nacú B Hernández;Fang-Yi Lin;Nicholas Bloome;G. Johnson;Hannah Dietrich;J. Marcinko;R. C. Williams;Eric W. Cochran
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文献类型：
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作者：
Michael J. Forrester;A. T. Becker;Austin Hohmann;Nacú B Hernández;Fang-Yi Lin;Nicholas Bloome;G. Johnson;Hannah Dietrich;J. Marcinko;R. C. Williams;Eric W. Cochran
对生物衍生塑料和橡胶的需求不断增长，甘油的大量供应使其成为生产生物聚合物的绝佳起始化学品。在商业上可行的甘油聚合物方面几乎没有成功。特别地，由于甘油的多官能性质，高分子量热塑性塑料特别难以实现。这项工作详细介绍了甘油-丙烯酸生物聚合物的生产。通过将甘油与丙烯酸反应，并随后进行RAFT聚合以抑制凝胶化，我们能够获得具有高分子量（1 MDa）的甘油热塑性塑料。在研究聚合物的热/机械性能后，发现这些甘油聚合物具有高度粘性。当作为粘合剂添加到木材中时，发现其性能与标准木材粘合剂如聚（二苯基甲烷二异氰酸酯）（PMDI）和甲醛基粘合剂相当或超过标准木材粘合剂。这产生了毒性更低、对环境影响更小和可再生性更高的木材粘合剂。
The increasing demand for bioderived plastics and rubbers and the large supply of glycerol makes it an excellent starting chemical for the production of biopolymers. Little success in commercially viable glycerol polymers has yet to be realized. In particular, high molecular weight thermoplastics have been especially elusive due to the multifunctional nature of glycerol. This work details the production of glycerol–acrylic biopolymers. By esterifying glycerol with acrylic acid, and subsequent RAFT polymerization to suppress the gelation, we were able to achieve glycerol thermoplastics with high molecular weights (1 MDa). After studying the thermal/mechanical properties of the polymer, it was found that these glycerol polymers had a high degree of tack. When added to wood as an adhesive, it was found that performance was comparable or exceeded standard wood adhesives such as Poly (Methylene diphenyl diisocyanate) (PMDI) and formaldehyde based adhesives. This yields wood adhesives that have less toxicity, lower environmental impact, and higher renewability.