title: Integration of lignin and acrylic monomers towards grafted copolymers by free radical polymerization.
abstract: Three kinds of acrylic monomers (2,2,3,4,4,4-hexafluorobutyl methacrylate (HFBMA), methyl methacrylate (MMA) and butyl acrylate (BA)) were utilized to modify the lignin (BBL) by "grafting from" free radical polymerization (FRP), respectively. Calcium chloride/hydrogen peroxide (CaCl2/H2O2) was used as initiator. Effects of monomer type and concentration, initiator concentration and polymerization time on grafting from BBL were studied. Grafting of poly (acrylic monomers) onto BBL was verified by the following characterizations and this synthesis method was found to be high efficient and selective for grafting polymerization of BBL. The presence of the BBL moiety in the backbone also resulted in higher glass transition temperature compared with the homopolymer of each monomer, and some modified copolymers also improved its thermal stability. All modifications made BBL more hydrophobic and the static contact angles of these modified copolymers were above 80°. XPS analysis revealed that the surface of these modified BBL copolymers were dominated by acrylate monomer moiety. Additionally, the BBL-g-PBA copolymers can be used as dispersion modifiers in PLA-based materials to enhance UV absorption.
authors.affiliation: Institute of Chemical Industry of Forestry Products, CAF, Nanjing, China; Key Laboratory of Biomass Energy and Material, Nanjing, Jiangsu Province, China; National Engineering Laboratory for Biomass Chemical Utilization, Nanjing, China; Key and Open Laboratory on Forest Chemical Engineering, SFA, Nanjing 210042, China.
authors.forename: Xiaohuan
authors.initials: X
authors.lastname: Liu
authors.affiliation: Institute of Chemical Industry of Forestry Products, CAF, Nanjing, China; Key Laboratory of Biomass Energy and Material, Nanjing, Jiangsu Province, China; National Engineering Laboratory for Biomass Chemical Utilization, Nanjing, China; Key and Open Laboratory on Forest Chemical Engineering, SFA, Nanjing 210042, China.
authors.forename: Yuzhi
authors.initials: Y
authors.lastname: Xu
authors.affiliation: Institute of Chemical Industry of Forestry Products, CAF, Nanjing, China; Key Laboratory of Biomass Energy and Material, Nanjing, Jiangsu Province, China; National Engineering Laboratory for Biomass Chemical Utilization, Nanjing, China; Key and Open Laboratory on Forest Chemical Engineering, SFA, Nanjing 210042, China.
authors.forename: Juan
authors.initials: J
authors.lastname: Yu
authors.affiliation: Institute of Chemical Industry of Forestry Products, CAF, Nanjing, China; Key Laboratory of Biomass Energy and Material, Nanjing, Jiangsu Province, China; National Engineering Laboratory for Biomass Chemical Utilization, Nanjing, China; Key and Open Laboratory on Forest Chemical Engineering, SFA, Nanjing 210042, China.
authors.forename: Shouhai
authors.initials: S
authors.lastname: Li
authors.affiliation: Institute of Chemical Industry of Forestry Products, CAF, Nanjing, China; Key Laboratory of Biomass Energy and Material, Nanjing, Jiangsu Province, China; National Engineering Laboratory for Biomass Chemical Utilization, Nanjing, China; Key and Open Laboratory on Forest Chemical Engineering, SFA, Nanjing 210042, China. Electronic address: wjf118@126.com.
authors.forename: Jifu
authors.initials: J
authors.lastname: Wang
authors.affiliation: Institute of Chemical Industry of Forestry Products, CAF, Nanjing, China; Key Laboratory of Biomass Energy and Material, Nanjing, Jiangsu Province, China; National Engineering Laboratory for Biomass Chemical Utilization, Nanjing, China; Key and Open Laboratory on Forest Chemical Engineering, SFA, Nanjing 210042, China. Electronic address: wangcpg@163.com.
authors.forename: Chunpeng
authors.initials: C
authors.lastname: Wang
authors.affiliation: Institute of Chemical Industry of Forestry Products, CAF, Nanjing, China; Key Laboratory of Biomass Energy and Material, Nanjing, Jiangsu Province, China; National Engineering Laboratory for Biomass Chemical Utilization, Nanjing, China; Key and Open Laboratory on Forest Chemical Engineering, SFA, Nanjing 210042, China. Electronic address: chufuxiang@caf.ac.cn.
authors.forename: Fuxiang
authors.initials: F
authors.lastname: Chu
mesh_terms: D000179:Acrylates / Q000138:chemical synthesis / Q000737:chemistry*; D002122:Calcium Chloride / Q000737:chemistry; D005609:Free Radicals / Q000737:chemistry*; D006861:Hydrogen Peroxide; D057927:Hydrophobic and Hydrophilic Interactions; D008031:Lignin / Q000138:chemical synthesis / Q000737:chemistry*; D058105:Polymerization; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D019904:Polymethyl Methacrylate / Q000737:chemistry; D013499:Surface Properties
chemical_list: D000179:Acrylates; D005609:Free Radicals; D011108:Polymers; D008031:Lignin; D019904:Polymethyl Methacrylate; D006861:Hydrogen Peroxide; C036658:acrylic acid; D002122:Calcium Chloride
keywords: Acrylic monomer; Biobutanol lignin (BBL); Graft polymerization; Hydrophobicity; UV absorption