Several biorenewable vegetable oil-based polyols with different molecular weights and various hydroxyl functionalities were successfully prepared by ring-opening epoxidized soybean oil with a castor oil-based fatty diol. It was found that several factors, including reaction time, reaction temperature, and molar ratios between epoxidized soybean oil and castor oil diol, affect structures and rheology behaviors of the final polyols. Proton NMR, FT-IR, GPC, and rheometry results revealed that the hydroxyl functionalities, molecular weight, and viscosity of the polyols could be tailored by controlling the above-mentioned factors. Besides, the role of solvents in the epoxy ring-opening process was investigated as well.
Poly (aniline-co-2-methoxy aniline-5-sulfonic acid) (PAMAS) was synthesized by an oxidative polymerization in this paper. The resulted copolymer was characterized by Fourier transform infrared spectroscopy and UV-vis spectroscopy, respectively. The PAMAS fibrous membranes and PAMAS/PEO fibrous membranes were prepared via electrospinning. The influence of the molecular weight of PEO and the ratio of PAMAS/PEO in spinning solution on the fibrous morphology was studied. The results showed that PAMAS has fiber-forming ability separately. The addition of PEO was helpful to the the electrospinning of PAMAS. With the increasing of PEO’s molecular weight, the average diameter of the PAMAS/PEO fibers increased. With the increasing of PAMAS content, the fibrous average diameter has an increasing tendency.
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