Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/16772
Title: Dimensional stability and fungal decay of rubber wood-polymer composites processed by gamma radiation
Authors: Gupta, S K
Gupta, N K
Singhal, R
Nagpal, A K
Keywords: Dimensional stability;Resistance;Biological deterioration;Rubber wood;Composites;Gamma radiation;Polymer loading
Issue Date: Mar-2004
Publisher: NISCAIR-CSIR, India
IPC Code: B27K3/15, 3/34
Abstract: An attempt has been made to improve dimensional stability and resistance to biological deterioration of rubber wood (Hevea brasiliensis) against fungal decay via preparation of wood-polymer composites (WPC). Monomer formulations based on methyl methacrylate (MMA), butyl methacrylate (BMA), acrylonitrile (AN) and styrene (ST) were used for impregnation and cobalt-60 gamma radiation source for polymerisation. Dimensional stability was measured in terms of anti-shrink efficiency (ASE), and biological deterioration in terms of weight loss caused by white and brown rot fungi during a period of 12 weeks exposure. Polymer loading (PL), in general, increased with the radiation dose upto 30 kGy. Maximum PL (~26%) was observed with BMA and minimum (~13%) with AN based formulations. Whereas, ASE improved proportionately with PL. Partial replacement of AN with MMA did not show significant effect on the said properties, that with ST lead to maximum ASE and resistance to fungal decay.
Page(s): 243-247
URI: http://hdl.handle.net/123456789/16772
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.11(2) [March 2004]

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