caa a22 4500 463223950 CHVBK 20180405153221.0 cr unu---uuuuu 170326e20070501xx s 000 0 eng 10.1007/s10853-006-1359-y doi (NATIONALLICENCE)springer-10.1007/s10853-006-1359-y Studies on the blends of modified epoxy resin and carboxyl-terminated polybutadiene (CTPB)—II: thermal and mechanical characteristics [Elektronische Daten] [Shailesh Shukla, Deepak Srivastava] Blend samples were prepared by physical mixing of resole-epoxy blend with carboxyl-terminated polybutadiene (CTPB) liquid rubber ranging between 0 and 25wt% in the interval of 5wt%. Resoles were synthesized with phenol and various alkyl phenols. The blends were cured with 40wt% polyamide. The structural changes during the curing were investigated by infra-red spectroscopic analysis. The presence of CTPB in resole-epoxy blends did not affected the values of cure times and ΔH whereas the gel time decreased up to 15wt% addition of CTPB in the blends. The blend systems containing p-cresolic resole, epoxy and CTPB showed minimum gel time amongst all other blend samples. A clear-cut two-step mass loss in thermogravimetric (TG) trace of unmodified and CTPB-modified systems was observed. The mechanical properties of the blend samples were found to be affected by the CTPB addition. The plane strain fracture toughness (K IC) values of CTPB-modified matrix resins were greater that that for the unmodified resole/epoxy blends. This was further verified by scanning electron microscopic (SEM) analysis. Springer Science+Business Media, LLC, 2007 Shukla Shailesh Department of Plastic Technology, H. B. Technological Institute, 208 002, Kanpur, U.P., India aut Srivastava Deepak Department of Plastic Technology, H. B. Technological Institute, 208 002, Kanpur, U.P., India aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/9(2007-05-01), 3215-3222 0022-2461 42:9<3215 2007 42 10853 https://doi.org/10.1007/s10853-006-1359-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1359-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shukla Shailesh Department of Plastic Technology, H. B. Technological Institute, 208 002, Kanpur, U.P., India aut NATIONALLICENCE 700 1- Srivastava Deepak Department of Plastic Technology, H. B. Technological Institute, 208 002, Kanpur, U.P., India aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/9(2007-05-01), 3215-3222 0022-2461 42:9<3215 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer