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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Vaidya, Alankar A. Gaugler, Marc Smith, Dawn A. |
| Description | Author Affiliation: Vaidya AA ( Scion, Te Papa Tipu Innovation Park, 49 Sala Street, Rotorua 3046, New Zealand. Electronic address: Alankar.vaidya@scionresearch.com.); Gaugler M ( Scion, Te Papa Tipu Innovation Park, 49 Sala Street, Rotorua 3046, New Zealand.); Smith DA ( Scion, Te Papa Tipu Innovation Park, 49 Sala Street, Rotorua 3046, New Zealand.) |
| Abstract | A large volume of wood waste is produced in timber processing industry which traditionally used in low value applications. Here, value addition to the wood waste (Sander dust) and cellulose, hemicellulose isolated thereof by functionalisation using cyclic anhydrides in a solvent-free and green reactive extrusion process is reported. The effect of extrusion temperature, catalyst and different weight ratios of Sander dust (SD):succinic anhydride (SA) on the esterification reaction is evaluated. The esterified products were characterised by the acid value, degree of substitution (DS), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), solid state (13)C NMR and thermo-gravimetric analysis (TGA). Under optimum extrusion conditions, mixed esters are formed, with highest acid value obtained for succinylation of cellulose (0.122 g/g at DS of 0.350) which is two times higher compared to succinylated SD (0.059 g/g at a weight gain of 0.452) and hemicellulose (0.043 g/g at DS of 0.290). The reactivity trend for individual anhydride was: (1) SA-Cellulose>SD>hemicellulose; (2) maleic anhydride (MA)-SD>hemicellulose>cellulose and (3) dodecenyl succinic anhydride (DDSA)-SD ≈ cellulose â« hemicellulose. The pendant free carboxyl groups generated through functionalisation of wood waste, cellulose and hemicellulose without the presence of polymeric carriers will allow more tailored or targeted modification of wood-plastic composites. |
| File Format | HTM / HTML |
| ISSN | 01448617 |
| Volume Number | 136 |
| e-ISSN | 18791344 |
| Journal | Carbohydrate Polymers |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2016-01-20 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Biochemistry__semicolon__materials Discipline Science Cellulose Chemistry Green Chemistry Technology Methods Polysaccharides Waste Products Wood Dust Esterification Molecular Weight Succinic Anhydrides Temperature Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Materials Chemistry Polymers and Plastics |
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