Preparation and characterization of konjac glucomannan-acrylic acid-diatomite composites

Abstract

A novel konjac glucomannan (KGM)‐acrylic acid‐diatomite composite (KGAD) was synthesized by the solution polymerization of partially neutralized acrylic acid (AA) on to KGM and diatomite (DT), using potassium persulfate as a free radical initiator, in the presence of Trimethylolpropane Trimethacrylate (TPTA) as a crosslinking agent. The structure and morphology of KGAD were characterized by using FT‐infrared, X‐ray diffraction, scanning electron microscopy. Besides, the thermal stability as well as the salt absorption of the composites was investigated by the thermogravimetric analysis and the swelling rate test, respectively. The results showed that the interactions between KGM‐AA (KGA0) and DT could be generated through hydrogen bond formation. Besides, the crystal of composites became rules and grew well with the addition of DT. It was also found that the appropriate amount of DT could be dispersed uniformly with a single crystal state in the matrix of KGA0 while excessive DT caused aggregation, inducing an irregular distribution in the matrix. In addition, the thermal stability of KGAD was improved based on the introduction of DT into the polymer network. POLYM. COMPOS., 37:3384–3390, 2016. © 2015 Society of Plastics Engineers

Temperature-Sensitive Poly(N-isopropylacrylamide)/Konjac Glucomannan/Graphene Oxide Composite Membranes with Improved Mechanical Property, Swelling Capability, and Degradability

“…Natural biopolymers have attracted tremendous attention because of their excellent properties, such as nontoxicity, biocompatibility, renewability, and biodegradability [19,20]. KGM is a high-molecular-weight polysaccharide and it is composed of d-mannose and d-glucose units linked by -(1, 4) bonds [21][22][23].…”

Enhanced Swelling and Responsive Properties of Pineapple Peel Carboxymethyl Cellulose-g-poly(acrylic acid-co-acrylamide) Superabsorbent Hydrogel by the Introduction of Carclazyte

“…Recently, incorporation of clays into hydrogels has been proved to be an effective approach to enhance the hydrogels properties. ,, Strong interfacial interactions between the dispersed clay layers and the hydrogels led to enhanced mechanical, thermal, and barrier properties. Different clays, such as montmorillonite, , kaolin, diatomite, rectorite, palygorskite, sepiolite, kaolinite, vermiculite, and medicinal stone, have been used in hydrogels formation to achieve lower cost and better properties. However, little information is available on the application of carclazyte in hydrogels.…”

Effect of aggregate size on liquid absorption characteristics of konjac glucomannan superabsorbent

“…prepared KGM‐ graft ‐acrylic acid hydrogel by frontal polymerization (FP) and found it display high water absorption rate . Due to its superior water absorption to starch‐based polysaccharides and satisfied biocompatibility property, KGM‐based superabsorbent polymers are expected to be widely used in many applications such as sanitary materials, water‐retention materials, medical materials, and controlled‐release devices . For examples, Liang et al .…”