Chemical and Rheological Characteristics of Thermally Stable Kraft Lignin Polycondensates Analyzed by Dielectric Properties
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Le Dai Duong | - |
dc.contributor.author | Nguyen Dang Luong | - |
dc.contributor.author | Nguyen Thi Thanh Binh | - |
dc.contributor.author | Park, In Kyung | - |
dc.contributor.author | Lee, Seong Hoon | - |
dc.contributor.author | Kim, Dea Sik | - |
dc.contributor.author | Lee, Yong Sang | - |
dc.contributor.author | Lee, Young Kwan | - |
dc.contributor.author | Kim, Byung Woo | - |
dc.contributor.author | Kim, Kwang Ho | - |
dc.contributor.author | KyuYoon, Ho | - |
dc.contributor.author | Yun, Ju Ho | - |
dc.contributor.author | Do Nam, Jae | - |
dc.date.accessioned | 2021-09-06T11:17:53Z | - |
dc.date.available | 2021-09-06T11:17:53Z | - |
dc.date.created | 2021-06-14 | - |
dc.date.issued | 2013 | - |
dc.identifier.issn | 1930-2126 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/106445 | - |
dc.description.abstract | In light of the difficulties and disagreements in determining the property-processing structure relations of lignin-based polymers, dielectric analysis was used to identify the thermal and rheological characteristics of a lignin-based polycondensate and the pristine lignin. Using dielectric analysis, the pristine lignin with M-w=6000 g/mol, was clearly identified as giving the wet glass transition temperature (T-g,T-wet) and the evolution of gases (i.e., burning) at around 80 degrees C to 125 degrees C followed by subsequent cross-linking reactions over 150 degrees C to give the dry glass transition temperature (T-g,T-dry) of lignin at around 130 degrees C to 140 degrees C. Connecting the lignin macromers using sequential condensation reactions with caprolactone and sebacoyl chloride, the lignin based polycaprolactone (LigPCL) polycondensates were synthesized as a thermoplastic polymer composed of lignin macromers and aliphatic polyester chains with M-w=10500 g/mol. The synthesized LigPCL presented good thermal stability and rheological melting behavior without evolving odor or fumes. In particular, the T-2% (defined at 2% of weight loss) of the LigPCL and pristine lignin were 200 degrees C and 80 degrees C, respectively. The melt viscosity was measured at 10(3)Pa.s at 120 degrees C, ensuring facile melt-blending processing with various commodity polymers to be used in eco-friendly polymer composite development. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | NORTH CAROLINA STATE UNIV DEPT WOOD & PAPER SCI | - |
dc.subject | POLYURETHANES | - |
dc.subject | POLYESTERS | - |
dc.title | Chemical and Rheological Characteristics of Thermally Stable Kraft Lignin Polycondensates Analyzed by Dielectric Properties | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | KyuYoon, Ho | - |
dc.identifier.wosid | 000323370400106 | - |
dc.identifier.bibliographicCitation | BIORESOURCES, v.8, no.3, pp.4518 - 4532 | - |
dc.relation.isPartOf | BIORESOURCES | - |
dc.citation.title | BIORESOURCES | - |
dc.citation.volume | 8 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 4518 | - |
dc.citation.endPage | 4532 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Paper & Wood | - |
dc.subject.keywordPlus | POLYURETHANES | - |
dc.subject.keywordPlus | POLYESTERS | - |
dc.subject.keywordAuthor | Lignin | - |
dc.subject.keywordAuthor | Polycondensate | - |
dc.subject.keywordAuthor | Polycaprolactone | - |
dc.subject.keywordAuthor | Biodegradable polymer | - |
dc.subject.keywordAuthor | Eco-friendly | - |
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