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Polylactic acid (PLA) with low moisture vapor transmission rates by grafting through of hydrophobic polymers directly to PLA backbone
专利权人:
International Business Machines Corporation
发明人:
Boday Dylan J.,Mauldin Timothy C.
申请号:
US201615257513
公开号:
US9725548(B2)
申请日:
2016.09.06
申请国别(地区):
美国
年份:
2017
代理人:
Bussan Matthew J.
摘要:
Polylactic acid-backbone graft and bottlebrush copolymers with low moisture vapor transmission rates are synthesized by polymerizing a lactide-functionalized hydrophobic macromonomer using ring-opening polymerization (ROP). In some embodiments of the present invention, the macromonomer is a lactide-functionalized hydrophobic polymer that may be synthesized by, for example, polymerizing a hydrophobic monomer (e.g., a fluorinated vinyl monomer such as 2,2,2-trifluroethyl methacrylate) capable of undergoing radical polymerization (e.g., styrenic, vinylic, acrylic, etc.) using a brominated lactide initiator via atom transfer radical polymerization (ATRP). The brominated lactide initiator may be 3-bromo-3,6-dimethyl-1,4-dioxane-2,5-dione prepared by, for example, reacting lactide with N-bromosuccinimide in the presence of benzoyl peroxide.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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