期刊论文

Wan, Hui

英文

BIORESOURCES

1930-2126

2016

11

2

5299-5311

10.15376/biores.11.2.5299-5311

This work was financially supported by Chinese National "Twelfth Five-Year Plan" Scientific Planning Project (2012BAD24B03), the Mississippi State University - Forest and Wildlife Research Center, United States Department of Agriculture, National Institute of Food and Agriculture, and the McIntire-Stennis Cooperative Forestry Research Program. This research is based upon work that is supported by the National Institute of Food and Agriculture, U.S. Department of Agriculture, McIntire Stennis project under 1003209. The manuscript is cataloged as SB799, Forest and Wildlife Research Center, Mississippi State University, MS 39762-9820. The authors are grateful for the financial support from these institutions.

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Co-polymer systems of methylene diphenyl diisocyanate (MDI) and phenol-formaldehyde (PF) resins with different molecular weights were characterized by infrared spectroscopy (FTIR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). The FTIR and TGA coupled with differential thermogravimetric (DTG) results showed that higher molecular weight of PF resins not only promoted the reaction of isocyanate and PF co-polymer system, but also resulted in a better thermal property of prepared co-polymers. The XRD results revealed that higher molecular weight led to a higher proportion of order...