A series of novel rosin‐based water‐borne polyurethanes (RWPUs) was prepared from fumaropimaric acid polyester polyol (FAPP) synthesised from rosin acid. Emulsions of the prepared RWPUs were investigated by transmission electron microscopy, and dried films of the emulsions were characterised by Fourier transform infrared spectroscopy, thermogravimetric analysis, X‐ray diffraction and differential scanning calorimetry. Other properties including water absorption, tensile strength, elongation at break, and antibacterial activity of the RWPUs were also determined. The results suggest that RWPU prepared with 35 wt% FAPP has good potential for applications, with improved mechanical properties, thermal stability and water resistance. The RWPU showed excellent antimicrobial properties in killing both Gram‐negative Escherichia coli and Gram‐positive Staphylococcus aureus. Copyright © 2011 Society of Chemical Industry

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Drapability is the unique performance that allows the fabric to be bent in multiple directions. Silk fabric has well handfeeling and draping property, it is suitable for studying the dynamic drape performance of fabric. In this paper, we select15 different samples of silk fabrics to measure its structural characteristics, mechanical properties and drapecharacteristics for studying the impact factors of dynamic draping property about silk fabric. A correlation analysis ismade with the measured fabric parameters to get the factors sequence which mainly affects the dynamic drapingproperty of fabric. Experimental result shows that the draping property of silk fabric is affected by many performanceparameters, however, the latitudinal tensile is the biggest impact factor among all these parameters.

Maleopimaric acid (MPA) can be used for polymer materials as a rosin derivative. In this study, rosin-based waterborne polyurethane (RWPU) was prepared with different content of maleopimaric acid polyester polyol (MAPP), which was synthesized from MPA. The properties of RWPU were studied by Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). Other properties including tensile strength, elongation at break, and water absorption were also determined. The onset decomposition temperature of RWPU with 30 wt% MAPP is improved from 170°C to 237°C, compared to the pure WPU. The tensile strength of the derivative was increased from 7.24 MPa to 23.24 MPa as well relative to the default polyurethane. The water absorption decreased significantly from 78.6% to 14.7%.