松香接枝纳米纤维素增强天然橡胶复合材料的制备及性能研究

doi:10.3969/j.issn.0253-2417.2021.05.011

林产化学与工业 ›› 2021, Vol. 41 ›› Issue (5): 72-78.doi: 10.3969/j.issn.0253-2417.2021.05.011

松香接枝纳米纤维素增强天然橡胶复合材料的制备及性能研究

郭晓亮¹^,², 祁思迈¹^,², 王春鹏¹^,², 王基夫¹^,²^,*(), 储富祥¹^,²

1. 中国林业科学研究院林产化学工业研究所; 生物质化学利用国家工程实验室; 国家林业和草原局林产化学工程重点实验室; 江苏省生物质能源与材料重点实验室, 江苏南京 210042
2. 南京林业大学江苏省林业资源高效加工利用协同创新中心, 江苏南京 210037

收稿日期:2020-09-29 出版日期:2021-10-28 发布日期:2021-11-04
通讯作者: 王基夫 E-mail:wjf118@126.com
作者简介:王基夫, 研究员, 博士生导师, 主要从事生物质材料功能化研究; E-mail: wjf118@126.com
郭晓亮(1996-), 男, 河南林州人, 硕士生, 从事生物质材料功能化研究工作
基金资助:
国家自然科学基金资助项目(31971600)

Preparation and Characterization of Rosin Grafted Cellulose Nanocrystals Reinforced Natural Rubber Composites

Xiaoliang GUO¹^,², Simai QI¹^,², Chunpeng WANG¹^,², Jifu WANG¹^,²^,*(), Fuxiang CHU¹^,²

1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
2. Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China

Received:2020-09-29 Online:2021-10-28 Published:2021-11-04
Contact: Jifu WANG E-mail:wjf118@126.com

摘要/Abstract

摘要：

采用松香改性纤维素纳米晶体（CNC），合成松香接枝纤维素纳米晶体（R-CNC），并以R-CNC增强天然橡胶（NR），制备松香接枝纤维素纳米晶体增强天然橡胶（R-CNC/NR）复合材料，并采用FT-IR、UV-Vis、XRD、SEM和万能试验机对R-CNC和R-CNC/NR的结构及性能进行表征。FT-IR证明R-CNC成功合成，通过UV-Vis试验得松香的接枝率为30%，XRD试验测得R-CNC/NR的结晶度为53.94%，SEM分析表明相比于CNC，R-CNC作为填料在NR分子中具有更好的相容性。通过拉伸试验表明NR拉伸强度为0.33 MPa；当CNC质量分数为40%时，纤维素纳米晶体增强天然橡胶（CNC/NR）的拉伸强度为1.56 MPa，弹性回复率88.75%；当R-CNC质量分数为40%时，R-CNC/NR的拉伸强度为2.87 MPa，弹性回复率90.04%。因此R-CNC作为填料更好的增强了NR的机械性能。

关键词: 脂松香, 纤维素纳米晶体, 天然橡胶, 聚合物, 复合膜

Abstract:

Cellulose nanocrystals(CNC) modified by rosin were used to synthesize rosin grafted cellulose nanocrystals(R-CNC). And R-CNC was applied as filler to strengthen natural rubber(NR) forming rosin grafted cellulose nanocrystals reinforced natural rubber composites(R-CNC/NR). FT-IR, UV-Vis, scanning electron microscope(SEM), X-ray diffraction(XRD) and tensile strength were employed to investigate the properties and performance. The successful grafting of rosin from CNC could be proved by FT-IR.The grafting rate of rosin calculated by UV-Vis was 30%. XRD proved that R-CNC/NR had excellent crystallinity. SEMtest showed that R-CNC had better compatibility with NR. Tensile test showed that the tensile strength of NR was 0.33 MPa. When the content of CNC was 40%, the tensile strength of natural rubber reinforced by cellulose nanocrystals(CNC/NR) was 1.56 MPa and the elastic recovery value was 88.75%. When the content of R-CNC was 40%, the tensile strength of R-CNC/NR was 2.87 MPa and the elastic recovery value was 90.04%. Therefore, the reinforcing effect of R-CNC on NR was better than that of CNC.

Key words: rosin, cellulose nanocrystals, natural rubber, polymer, composite membrane

中图分类号:

TQ35

郭晓亮, 祁思迈, 王春鹏, 王基夫, 储富祥. 松香接枝纳米纤维素增强天然橡胶复合材料的制备及性能研究[J]. 林产化学与工业, 2021, 41(5): 72-78.

Xiaoliang GUO, Simai QI, Chunpeng WANG, Jifu WANG, Fuxiang CHU. Preparation and Characterization of Rosin Grafted Cellulose Nanocrystals Reinforced Natural Rubber Composites[J]. Chemistry and Industry of Forest Products, 2021, 41(5): 72-78.

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松香接枝纳米纤维素增强天然橡胶复合材料的制备及性能研究

Preparation and Characterization of Rosin Grafted Cellulose Nanocrystals Reinforced Natural Rubber Composites

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