Synthesis and Application of Tackifying Dispersant Poly (Vinyl Alcohol-Acrylic Acid-Triallyl Cyanate)

Abstract

At present, the thickener market is relatively advanced. Only by imparting thickeners with new properties can they meet the needs of the current market. In this work, a new modified tackifying dispersant poly (vinyl alcohol-acrylic acid-triallyl cyanate) (PVA-AA-t) was prepared via alcoholysis of a random copolymer composed of vinyl acetate (VAc), acrylic acid (AA), and triallyl cyanate (TAC) by a one-step high-temperature solution polymerization in methanol, which was a relatively simple method. The structure of the polymer was characterized by FTIR and TG. FTIR proved the successful synthesis of PVA-AA-t, while TG showed the thermal stability of PVA-AA-t at around 100 °C. The excellent thickening properties of the PVA-AA-t were observed using a nano particle size analyzer and a rotary viscometer. The nano particle size analyzer showed that the PVA-AA-t particles swelled in water to nearly nine times their initial size. The rotary viscometer showed that the viscosity of PVA-AA-t in water increased significantly, while PVA-AA-t was sensitive to electrolytes and pH, which changed the polymer molecular chain from stretched to curled, resulting in a decrease in viscosity. In addition, the dispersion properties of PVA-AA-t and a common thickener as graphene (Gr) dispersants were compared. The results indicate that PVA-AA-t has very good compatibility with Gr, and can effectively disperse Gr, because of the introduction of weak polar molecules (VAc) to the polymer molecules, changing their polarity, meaning that it is possible to use PVA-AA-t in the dispersion of Gr and other industrial applications (such as conductive textile materials, Gr batteries, etc.) derived from it.

Synthesis and Characterization of Okara-Poly(acrylic acid) Superabsorbent Hydrogels for Enhancing Vegetable Growth through Improving Water Holding and Retention Properties of Soils

“…The Fourier transform infrared (FTIR) spectroscopic characterization of Ok, Ok-PAA 2 , Ok-PAA 3 , and Ok-PAA 4 samples was carried out, and the results are shown in Figure S1. The peaks at 3600–3100 cm –1 exhibited in the samples were attributed to O–H bond from Ok. Ok-PAA 2 , Ok-PAA 3 , and Ok-PAA 4 showed a strong absorption band at 1556 cm –1 , which is attributed to the symmetric stretching vibration of −COO – from AA units . The SEM images of Ok-PAA 2 , Ok-PAA 3 , and Ok-PAA 4 after swelling are shown in Figure S2.…”

“…The peaks at 3600−3100 cm −1 exhibited in the samples were attributed to O−H bond from Ok. Ok-PAA 2 , Ok-PAA 3 , and Ok-PAA 4 showed a strong absorption band at 1556 cm −1 , which is attributed to the symmetric stretching vibration of −COO − from AA units. 47 The SEM images of Ok-PAA 2 , Ok-PAA 3 , and Ok-PAA 4 after swelling are shown in Figure S2. It can be seen that all the swollen samples have porous morphology, and Ok-PAA 4 showed a looser structure than Ok-PAA 2 and Ok-PAA 3 , which is consistent with the results of water swelling.…”

Synthesis of Amphiphilic Block Copolymer and Its Application in Pigment-Based Ink

“…Consequently, the dispersion of the particles in water is enhanced by means of the hydrophilic segments of the polymers [26]. In addition to the classical carboxylic acid groups, the inclusion of acrylic acid groups as water-soluble molecular constituents has also been extensively examined owing to their heightened acidity and hydrophilicity [27][28][29].…”