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22 March 2021 Development, characterization, and properties of cross-linked PVA-CA-lignin based resin for natural fiber composites
Jaehwan Kim, Bijender Kumar, Pham Duc Hoa, Dickens O. Agumba, Pooja S. Panicker, Hyun Chan Kim
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Proceedings Volume 11590, Nano-, Bio-, Info-Tech Sensors and Wearable Systems; 115900F (2021) https://doi.org/10.1117/12.2582708
Event: SPIE Smart Structures + Nondestructive Evaluation, 2021, Online Only
Abstract
In this study, we developed a new type of cross-linked polyvinyl alcohol (PVA)-lignin i.e., esterified PVA-CA-lignin resin by using citric acid (CA) cross-linker. Firstly, hydrogen bonded PVA-CA-lignin resin was prepared by the mixing of PVA, lignin and CA and then esterification of hydrogen bonded PVA-CA-lignin resin was carried out at 180oC. Subsequently, the esterification of PVA-CA-lignin resin was confirmed by FTIR and the morphology of the esterified PVA-CA-lignin resin was examined with the help of scanning electron microscopy.Finally, the effects of CA cross-linker on the properties of esterified PVA-CA-lignin resin, especially the tensile strength and thermal stability were evaluated and analyzed. The results demonstrated that CA was cross-linked in PVA-lignin resin matrix and the content of CAenhances the performance of esterified PVA-CA-lignin resin significantly. The esterified PVA-CA-lignin resin is applicable for the natural fibre reinforced composites.
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Jaehwan Kim, Bijender Kumar, Pham Duc Hoa, Dickens O. Agumba, Pooja S. Panicker, and Hyun Chan Kim "Development, characterization, and properties of cross-linked PVA-CA-lignin based resin for natural fiber composites", Proc. SPIE 11590, Nano-, Bio-, Info-Tech Sensors and Wearable Systems, 115900F (22 March 2021); https://doi.org/10.1117/12.2582708
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KEYWORDS
Composites
Hydrogen
FT-IR spectroscopy
Scanning electron microscopy
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