Please use this identifier to cite or link to this item:
Title: Modification of natural rubber using thermoset resins
Researcher: Bhuvaneswary, M G
Guide(s): Thachil, Eby Thomas
Keywords: Rubber technology
Polymer Sciences
Thermoset resins
Natural rubber
Upload Date: 9-Nov-2011
University: Cochin University of Science and Technology
Completed Date: 25/02/2010
Abstract: This thesis presents the findings of a study on incorporating vanous thermoset resins into natural rubber for property improvement. Natural rubber is an important elastomer with the unique attribute of being a renewable agricultural product. The study was undertaken to investigate the extent to which the drawbacks of natural rubber, especially its poor thermal and oil resistance propel1ies could be nullified by blending with common thermoset resins. A thorough and comparative understanding of the perfonnance of different resins from this viewpoint will be beneficial for both natural IUbber processors and consumers. In this study the thennoset resins used were epoxy resin, phenolics, epoxidised phenolics and unsaturated polyester resin. The resins were incorporated into NR during compounding and their effects on the properties of NR were studied after vulcanization. Properties were studied for both gum and filled N R compounds. The important properties studied are cure characteristics, mechanical properties, ageing propel1ies, thermal propel1ies, crosslink density and extractability. Characterization studies were also conducted using FTIR, TGA and DSC. Improvement in mechanical properties was noticed in many cases. The results show that most resins lead to a reduction in the cure time of NR. The perfonnance of epoxy resin is most noticeable in this respect. Mechanical properties of the modified IUbber show maximum improvement in the case of epoxidised novolacs. Most resins are seen to improve the thermal and oil resistance propel1ies of NR. Epoxy novolacs show maximum effect in this respect also. However the presence of tillers is found to moderate the positive effects of the thermoset resins considerably.
Pagination: 252p.
Appears in Departments:Department of Polymer Science & Rubber Technology

Files in This Item:
File Description SizeFormat 
01_title.pdfAttached File81.2 kBAdobe PDFView/Open
02_certificate.pdf38.31 kBAdobe PDFView/Open
03_declaration.pdf26.03 kBAdobe PDFView/Open
04_preface.pdf113.91 kBAdobe PDFView/Open
05_abstract.pdf50.86 kBAdobe PDFView/Open
06_contents.pdf27.58 kBAdobe PDFView/Open
07_chapter 1.pdf2.42 MBAdobe PDFView/Open
08_chapter 2.pdf1.74 MBAdobe PDFView/Open
09_chapter 3.pdf1.33 MBAdobe PDFView/Open
10_chapter 4.pdf1.53 MBAdobe PDFView/Open
11_chapter 5.pdf1.03 MBAdobe PDFView/Open
12_summary.pdf210.19 kBAdobe PDFView/Open
13_acronyms.pdf54.39 kBAdobe PDFView/Open
14_list of publications.pdf55.58 kBAdobe PDFView/Open

Items in Shodhganga are protected by copyright, with all rights reserved, unless otherwise indicated.