酚化改性蔗渣硫酸盐木素制备酚醛树脂胶黏剂

贾　转<sup>1; 2</sup>; 万广聪<sup>1; 2</sup>; 张清桐<sup>1; 2</sup>; 李明富<sup>1; 2</sup>; 罗　斌<sup>1; 2</sup>; 郭晨艳<sup>1; 2</sup>; 王双飞<sup>1; 2</sup>; 闵斗勇<sup>1; 2; *</sup>

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Phenolation of Bagasse Kraft Lignin for Application in Lignin-based Phenol Formaldehyde Adhesives

DOI：10.11980/j.issn.0254-508X.2018.09.001

Key Words:sugarcane bagasse kraft lignin phenolation lignin-based phenolic formaldehyde adhesive

Fund Project:中国博士后基金（2015M570419）；华南理工大学制浆造纸工程国家重点实验室开放基金（201516）。

Author Name	Affiliation
JIA Zhuan^1，2	1. College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 2.Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004
WAN Guang-cong^1，2	1. College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 2.Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004
ZHANG Qing-tong^1，2	1. College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 2.Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004
LI Ming-fu^1，2	1. College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 2.Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004
LUO Bin^1，2	1. College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 2.Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004
GUO Chen-yan^1，2	1. College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 2.Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004
WANG Shuang-fei^1，2	1. College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 2.Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004
MIN Dou-yong^1，2,*	1. College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 2.Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004

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Abstract:In this study， sugarcane bagasse kraft lignin(KL)was phenolated by using acid as a catalyst. The phenolation process was optimized by single-factor and orthogonal experimental design where the phenolic hydroxyl group content of lignin was used as response value. The optimal conditions were found as follows: phenol∶KL=4∶1(mass ratio）， t=2.5 h， T=110℃， the catalyst dosage(concentrated sulphuric acid of 98 wt%)was 4%. The structural changes of KL induced by phenolation were further characterized by 31P Nuclear Magnetic Resonance Spectroscopy(31P NMR）， and Fourier Transform infrared spectroscopy. The results indicated that the molecular weight and the polydispersity of phenolated bagasse kraft lignin（PKL)decreased. The phenolic hydroxyl group content increased. Eventually， P-KL and KL were respectively used to replace 60 wt % of phenol to produce phenolic formaldehyde(PF) adhesives as P-KLPF and KLPF. Compared to KLPF， less formaldehyde and phenol were released from P-KLPF which indicated that phenolation was an effective way to improve the reaction activity bagasse kraft lignin lignin and formaldehyde.

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