Regeneration of cello-oligomers via selective depolymerization of cellulose fibers derived from printed paper wastes
tCellulose extracted from printed paper wastes were selectively depolymerized under controlledconditions into cello-oligomers of controllable chain lengths via dissolution in an ionic liquid, 1-allyl-3-methylimidazolium chloride (AMIMCl), and in the presence of an acid catalyst, Amberlyst 15DRY. The...
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| Format: | Article |
| Language: | English |
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Elsevier Ltd
2016
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| Online Access: | http://ir.unimas.my/id/eprint/12184/ http://ir.unimas.my/id/eprint/12184/1/No%205%20%28abstrak%29.pdf |
| _version_ | 1848837144009768960 |
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| author | Lee, Ken Voon Suh, Cem Pang Suk, Fun Chin |
| author_facet | Lee, Ken Voon Suh, Cem Pang Suk, Fun Chin |
| author_sort | Lee, Ken Voon |
| building | UNIMAS Institutional Repository |
| collection | Online Access |
| description | tCellulose extracted from printed paper wastes were selectively depolymerized under controlledconditions into cello-oligomers of controllable chain lengths via dissolution in an ionic liquid, 1-allyl-3-methylimidazolium chloride (AMIMCl), and in the presence of an acid catalyst, Amberlyst 15DRY. Thedepolymerization process was optimized against reaction temperature, concentration of acid catalyst,and reaction time. Despite rapid initial depolymerization process, the rate of cellulose depolymerizationslowed down gradually upon prolonged reaction time, with 75.0 wt% yield of regenerated cello-oligomers(mean Viscosimetric Degree of Polymerization value of 81) obtained after 40 min. The depolymeriza-tion of cellulose fibers at 80◦C appeared to proceed via a second-order kinetic reaction with respect tothe catalyst concentration of 0.23 mmol H3O+. As such, the cellulose depolymerization process couldafford some degree of control on the degree of polymerization or chain lengths of cello-oligomersformed. |
| first_indexed | 2025-11-15T06:34:59Z |
| format | Article |
| id | unimas-12184 |
| institution | Universiti Malaysia Sarawak |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T06:34:59Z |
| publishDate | 2016 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
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| spelling | unimas-121842016-10-21T01:30:25Z http://ir.unimas.my/id/eprint/12184/ Regeneration of cello-oligomers via selective depolymerization of cellulose fibers derived from printed paper wastes Lee, Ken Voon Suh, Cem Pang Suk, Fun Chin TP Chemical technology tCellulose extracted from printed paper wastes were selectively depolymerized under controlledconditions into cello-oligomers of controllable chain lengths via dissolution in an ionic liquid, 1-allyl-3-methylimidazolium chloride (AMIMCl), and in the presence of an acid catalyst, Amberlyst 15DRY. Thedepolymerization process was optimized against reaction temperature, concentration of acid catalyst,and reaction time. Despite rapid initial depolymerization process, the rate of cellulose depolymerizationslowed down gradually upon prolonged reaction time, with 75.0 wt% yield of regenerated cello-oligomers(mean Viscosimetric Degree of Polymerization value of 81) obtained after 40 min. The depolymeriza-tion of cellulose fibers at 80◦C appeared to proceed via a second-order kinetic reaction with respect tothe catalyst concentration of 0.23 mmol H3O+. As such, the cellulose depolymerization process couldafford some degree of control on the degree of polymerization or chain lengths of cello-oligomersformed. Elsevier Ltd 2016 Article PeerReviewed text en http://ir.unimas.my/id/eprint/12184/1/No%205%20%28abstrak%29.pdf Lee, Ken Voon and Suh, Cem Pang and Suk, Fun Chin (2016) Regeneration of cello-oligomers via selective depolymerization of cellulose fibers derived from printed paper wastes. Carbohydrate Polymers, 142. pp. 31-37. ISSN 1448617 http://www.scopus.com/inward/record.url?eid=2-s2.0-84956973849&partnerID=40&md5=4a5b3105f5adce01ff9b99894801bb06 10.1016/j.carbpol.2016.01.027 |
| spellingShingle | TP Chemical technology Lee, Ken Voon Suh, Cem Pang Suk, Fun Chin Regeneration of cello-oligomers via selective depolymerization of cellulose fibers derived from printed paper wastes |
| title | Regeneration of cello-oligomers via selective depolymerization of cellulose fibers derived from printed paper wastes |
| title_full | Regeneration of cello-oligomers via selective depolymerization of cellulose fibers derived from printed paper wastes |
| title_fullStr | Regeneration of cello-oligomers via selective depolymerization of cellulose fibers derived from printed paper wastes |
| title_full_unstemmed | Regeneration of cello-oligomers via selective depolymerization of cellulose fibers derived from printed paper wastes |
| title_short | Regeneration of cello-oligomers via selective depolymerization of cellulose fibers derived from printed paper wastes |
| title_sort | regeneration of cello-oligomers via selective depolymerization of cellulose fibers derived from printed paper wastes |
| topic | TP Chemical technology |
| url | http://ir.unimas.my/id/eprint/12184/ http://ir.unimas.my/id/eprint/12184/ http://ir.unimas.my/id/eprint/12184/ http://ir.unimas.my/id/eprint/12184/1/No%205%20%28abstrak%29.pdf |