Abstract
AbstractPolyacrylate resin composite materials with the mineral exhibit super water absorbency and good degradation ability. In this work, expanded perlite and sodium polyacrylate resin composite materials have been prepared with ceric ammonium nitrate (CAN), N,N’-methylene bisacrylamide (MBA), tapioca starch, and expanded perlite. Fourier transform infrared spectroscopy (FT-IR) and field emission scanning electron microscopy (SEM) are used to characterize the bonds absorption peaks and morphologies. The results suggest that the expanded perlite can graft on sodium polyacrylate resin, and the optimal distilled water and 0.9% NaCl absorbency are 1079 and 253 g/g when the expanded perlite content is 8 wt%, respectively. The swelling water model of the composite materials is firstly simulated to be Voigt-based model. In addition, the composite materials absorbency that is influenced by special characteristics of the expanded perlite has been shown.
Highlights
The polycondensation of sodium acrylate was prepared with 0.10 wt% ceric ammonium nitrate (CAN), 1.6 wt% methylene bisacrylamide (MBA), and 7 wt% tapioca starch under 25°C for 1 h, and various contents of the expanded perlite (2–12 wt%; 200 mesh) were added into the aforementioned polycondensation under 65°C for 2.5 h in a container under a pressure of ~0.5 bar
The solution absorbency (Q, g/g) was calculated by the equation, i.e., Q = (m2-m1)/m1, here m1 is the weight of dried composite materials particles, m2 represents the weight of the swelled solution samples after draining for 5 min, all the absorbency results were tested for 5 times in this study
All the detected bonds reaction information and microstructure message implied the expanded perlite grafted on sodium polyacrylate resin, which was in agreement with literature report [15]
Summary
Let A, A∗ denotefaittLeedonwaitrhd pthaeirmoinneVr.aWl aencdansoddeiutemrmpionleyawchryelathteerreAs,inA∗ is self-dual i By [13, Lemma 1.3] eaccohmepiogseintespmaacteeroifalAs,, Abe∗chauasseditmheencsoimonpoosnitee. mLeatte{rθiai}lsdi= denote an o. Let A, A∗ denotefaittLeedonwaitrhd pthaeirmoinneVr.aWl aencdansoddeiutemrmpionleyawchryelathteerreAs,inA∗ is self-dual i By [13, Lemma 1.3] eaccohmepiogseintespmaacteeroifalAs,, Abe∗chauasseditmheencsoimonpoosnitee.
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