All Biomass and UV Protective Composite Composed of CompatibilizedLignin and Poly (Lactic-acid)

Collection with item attached
2017
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/474401.do
DOI
10.1038/srep43596
Title
All Biomass and UV Protective Composite Composed of CompatibilizedLignin and Poly (Lactic-acid)
Description
This work was supported by the National Research Foundation of Korea(NRF), the Ministry of Science, ICT & Future Planning(NRF-2014M3C1B2048175 and 2016R1A2B1007134), and Ministry of Trade,Industry and Energy (MOTIE) (10067690). We also appreciated the projectand equipment support from Gyeonggi Province through the GRRC program inSungkyunkwan University. KJK would like to acknowledge this material isbased upon work supported in part by the National Science Foundationunder Grant No. IIA-1301726.
abstract
Utilization of carbon-neutral biomass became increasingly important due to a desperate need for carbon reduction in the issue of global warming in light of replacing petroleum-based materials. We used lignin, which was an abundant, low cost, and non-food based biomass, for the development of all biomass-based films and composites through reactive compatibilization with poly (lactic-acid) (PLA). Using a facile and practical route, the hydrophilic hydroxyl groups of lignin were acetylated to impose the compatibility with PLA. The solubility parameter of the pristine lignin at 26.3 (J/cm(3))(0.5) was altered to 20.9 (J/cm(3))(0.5) by acetylation allowing the good compatibility with PLA at 20.2 (J/cm(3))(0.5). The improved compatibility of lignin and PLA provided substantially decreased lignin domain size in composites (12.7 mu m), which subsequently gave transparent and UV-protection films (visual transmittance at 76% and UV protection factor over 40). The tensile strength and elongation of the developed composite films were increased by 22% and 76%, respectively, and the biobased carbon content was confirmed as 96 +/- 3%. The developed PLA/lignin composites provided 100% all-biomass contents and balanced optical and mechanical properties that could broaden its eco-friendly applications in various industries.
provenance
Made available in Cube on 2018-09-28T10:45:05Z (GMT). No. of bitstreams: 0
language
English
author
Kim, Youngjun
Suhr, Jonghwan
Seo, Hee-Won
Sun, Hanna
Kim, Sanghoon
Park, In-Kyung
Kim, Soo-Hyun
Lee, Youngkwan
Kim, Kwang-Jin
Nam, Jae-Do
accessioned
2018-09-28T10:45:05Z
available
2018-09-28T10:45:05Z
issued
2017
citation
SCIENTIFIC REPORTS(7)
issn
2045-2322
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/474401.do
Funder
산업통상자원부
Funding Program
소재부품기술개발
Project ID
1415155921
Jurisdiction
Rep.of Korea
Project Name
Development of crystal nano-cellulose fiber/lignin-resin nanocomposites for interior part materials of automotive
rights
openAccess
type
article


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