Multiscale Modification of Populus cathayana by Alkali Lignin Combined with Heat Treatment.
Identifieur interne : 000D74 ( Main/Exploration ); précédent : 000D73; suivant : 000D75Multiscale Modification of Populus cathayana by Alkali Lignin Combined with Heat Treatment.
Auteurs : Haizhen Zhou [République populaire de Chine] ; Jingyu Li [République populaire de Chine] ; Erni Ma [République populaire de Chine]Source :
- Polymers [ 2073-4360 ] ; 2018.
Abstract
Chemical modification of wood with green modifiers is highly desirable for sustainable development. With the aim of enhancing the water resistance and dimensional stability of fast growing wood, modifications were conducted using renewable and toxicity-free industrial lignin combined with heat treatment. Poplar (Populus cathayana) samples first underwent impregnation with alkali lignin solution and were then subjected to heat treatment at 140⁻180 °C for two hours. The results indicated that the modified wood showed excellent leaching resistance. The alkali lignin treatment improved surface hydrophobicity and compression strength, and decreased moisture and water uptake, thereby reducing the dimensional instability of modified wood. These changes became more pronounced as the heat-treating temperature increased. Scanning electron microscopy, confocal laser scanning microscopy, and Fourier transform infrared spectroscopy evidenced that a multiscale improvement of the alkali lignin occurred in the cell lumen and cell wall of wood fibers and vessels, with small alkali lignin molecules reacting with the wood matrix. This study paves the way for developing an effective modification approach for fast growing wood, as well as promoting the reuse of industrial lignin for high-value applications, and improves the sustainable development of the forestry industry.
DOI: 10.3390/polym10111240
PubMed: 30961165
PubMed Central: PMC6401913
Affiliations:
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wicri:level="1"><nlm:affiliation>Beijing Key Laboratory of Wood Science and Engineering, MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Qinghua Eastroad 35#, Haidian, Beijing 100083, China. maerni@bjfu.edu.cn.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Beijing Key Laboratory of Wood Science and Engineering, MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Qinghua Eastroad 35#, Haidian, Beijing 100083</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author></analytic><series><title level="j">Polymers</title><idno type="eISSN">2073-4360</idno><imprint><date when="2018" type="published">2018</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Chemical modification of wood with green modifiers is highly desirable for sustainable development. With the aim of enhancing the water resistance and dimensional stability of fast growing wood, modifications were conducted using renewable and toxicity-free industrial lignin combined with heat treatment. Poplar (<i>Populus cathayana</i>) samples first underwent impregnation with alkali lignin solution and were then subjected to heat treatment at 140⁻180 °C for two hours. The results indicated that the modified wood showed excellent leaching resistance. The alkali lignin treatment improved surface hydrophobicity and compression strength, and decreased moisture and water uptake, thereby reducing the dimensional instability of modified wood. These changes became more pronounced as the heat-treating temperature increased. Scanning electron microscopy, confocal laser scanning microscopy, and Fourier transform infrared spectroscopy evidenced that a multiscale improvement of the alkali lignin occurred in the cell lumen and cell wall of wood fibers and vessels, with small alkali lignin molecules reacting with the wood matrix. This study paves the way for developing an effective modification approach for fast growing wood, as well as promoting the reuse of industrial lignin for high-value applications, and improves the sustainable development of the forestry industry.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">30961165</PMID><DateRevised><Year>2020</Year><Month>09</Month><Day>30</Day></DateRevised><Article PubModel="Electronic"><Journal><ISSN IssnType="Electronic">2073-4360</ISSN><JournalIssue CitedMedium="Internet"><Volume>10</Volume><Issue>11</Issue><PubDate><Year>2018</Year><Month>Nov</Month><Day>09</Day></PubDate></JournalIssue><Title>Polymers</Title><ISOAbbreviation>Polymers (Basel)</ISOAbbreviation></Journal><ArticleTitle>Multiscale Modification of <i>Populus cathayana</i> by Alkali Lignin Combined with Heat Treatment.</ArticleTitle><ELocationID EIdType="pii" ValidYN="Y">E1240</ELocationID><ELocationID EIdType="doi" ValidYN="Y">10.3390/polym10111240</ELocationID><Abstract><AbstractText>Chemical modification of wood with green modifiers is highly desirable for sustainable development. With the aim of enhancing the water resistance and dimensional stability of fast growing wood, modifications were conducted using renewable and toxicity-free industrial lignin combined with heat treatment. Poplar (<i>Populus cathayana</i>) samples first underwent impregnation with alkali lignin solution and were then subjected to heat treatment at 140⁻180 °C for two hours. The results indicated that the modified wood showed excellent leaching resistance. The alkali lignin treatment improved surface hydrophobicity and compression strength, and decreased moisture and water uptake, thereby reducing the dimensional instability of modified wood. These changes became more pronounced as the heat-treating temperature increased. Scanning electron microscopy, confocal laser scanning microscopy, and Fourier transform infrared spectroscopy evidenced that a multiscale improvement of the alkali lignin occurred in the cell lumen and cell wall of wood fibers and vessels, with small alkali lignin molecules reacting with the wood matrix. This study paves the way for developing an effective modification approach for fast growing wood, as well as promoting the reuse of industrial lignin for high-value applications, and improves the sustainable development of the forestry industry.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Zhou</LastName><ForeName>Haizhen</ForeName><Initials>H</Initials><AffiliationInfo><Affiliation>Beijing Key Laboratory of Wood Science and Engineering, MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Qinghua Eastroad 35#, Haidian, Beijing 100083, China. zhzbjfu@163.com.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Li</LastName><ForeName>Jingyu</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>Beijing Key Laboratory of Wood Science and Engineering, MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Qinghua Eastroad 35#, Haidian, Beijing 100083, China. ljyemma@163.com.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Ma</LastName><ForeName>Erni</ForeName><Initials>E</Initials><Identifier Source="ORCID">0000-0001-9774-9779</Identifier><AffiliationInfo><Affiliation>Beijing Key Laboratory of Wood Science and Engineering, MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Qinghua Eastroad 35#, Haidian, Beijing 100083, China. maerni@bjfu.edu.cn.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><GrantList CompleteYN="Y"><Grant><GrantID>No. 2017ZY47, No. 2015ZCQ-CL-01</GrantID><Agency>Fundamental Research Funds for the Central Universities of China</Agency><Country></Country></Grant></GrantList><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2018</Year><Month>11</Month><Day>09</Day></ArticleDate></Article><MedlineJournalInfo><Country>Switzerland</Country><MedlineTA>Polymers (Basel)</MedlineTA><NlmUniqueID>101545357</NlmUniqueID><ISSNLinking>2073-4360</ISSNLinking></MedlineJournalInfo><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">alkali lignin</Keyword><Keyword MajorTopicYN="N">dimensional stability</Keyword><Keyword MajorTopicYN="N">heat treatment</Keyword><Keyword MajorTopicYN="N">water resistance</Keyword><Keyword MajorTopicYN="N">wood modification</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2018</Year><Month>09</Month><Day>15</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2018</Year><Month>11</Month><Day>03</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2018</Year><Month>11</Month><Day>05</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2019</Year><Month>4</Month><Day>10</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2019</Year><Month>4</Month><Day>10</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2019</Year><Month>4</Month><Day>10</Day><Hour>6</Hour><Minute>1</Minute></PubMedPubDate></History><PublicationStatus>epublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">30961165</ArticleId><ArticleId IdType="pii">polym10111240</ArticleId><ArticleId IdType="doi">10.3390/polym10111240</ArticleId><ArticleId IdType="pmc">PMC6401913</ArticleId></ArticleIdList><ReferenceList><Reference><Citation>Chemistry. 2010 Mar 22;16(12):3568-88</Citation><ArticleIdList><ArticleId IdType="pubmed">20209527</ArticleId></ArticleIdList></Reference><Reference><Citation>Bioresour Technol. 2013 Jan;127:132-7</Citation><ArticleIdList><ArticleId IdType="pubmed">23131633</ArticleId></ArticleIdList></Reference><Reference><Citation>Biomacromolecules. 2013 Jul 8;14(7):2354-63</Citation><ArticleIdList><ArticleId IdType="pubmed">23721395</ArticleId></ArticleIdList></Reference></ReferenceList></PubmedData></pubmed><affiliations><list><country><li>République populaire de Chine</li></country><settlement><li>Pékin</li></settlement></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Zhou, Haizhen" sort="Zhou, Haizhen" uniqKey="Zhou H" first="Haizhen" last="Zhou">Haizhen Zhou</name></noRegion><name sortKey="Li, Jingyu" sort="Li, Jingyu" uniqKey="Li J" first="Jingyu" last="Li">Jingyu Li</name><name sortKey="Ma, Erni" sort="Ma, Erni" uniqKey="Ma E" first="Erni" last="Ma">Erni Ma</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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