Swelling Behavior of Polyacrylamide–Cellulose Nanocrystal
materials Article Swelling Behavior of Polyacrylamide–Cellulose Nanocrystal Hydrogels: Swelling Kinetics, Temperature, and pH E ects Tippabattini Jayaramudu 1,2, Hyun-U Ko 1, Hyun Chan Kim 1, Jung Woong Kim 1 and Jaehwan Kim 1,* 1 Center for Nanocellulose Future Composites, Department of Mechanical Engineering, Inha University, 100 Inha-Ro, Michuhol-Gu, Incheon 22212, Korea
Mechanical properties of a polyacrylamide gel with reversible DNA crosslinks are presented. In this system, three DNA strands replace traditional chemical crosslinkers. In contrast to thermoset chemically crosslinked polyacrylamide, the new hydrogel is thermoreversible; crosslink dissociation without the addition of heat is also feasible by
Mechanical and swelling properties of polyacrylamide gel
Mechanical and swelling properties of polyacrylamide gel spheres Suman K. Patel, Ferdinand Rodriguez* and Claude Cohen School of Chemical Engineering, Comell University, Ithaca. NY 14853, USA (Received 24 July 1988; revised 13 January 1989; accepted 24 January 1989) Spheres of crosslinked acrylamide-methylene bisacrylamide copolymer were
Gelatin/polyacrylamide/graphene oxide nanocomposite double-network hydrogels (Gelatin/PAAm/GO NC-DN gels) were prepared by in situ free radical polymerization. Their structure and properties were systematically characterized by X-ray diffraction (XRD), Raman spectroscopy, swelling experiments, scanning electron microscopy (SEM) and tensile tests.
Double network hydrogel of sodium alginate/polyacrylamide
Double network hydrogel of sodium alginate/polyacrylamide cross-linked with POSS: Swelling, dye removal and mechanical properties. Bahrami Z(1), Akbari A(2), Eftekhari-Sis B(3). Author information: (1)Department of Chemistry, University of Maragheh, Maragheh 55181-83111, Iran.
Hydrogels used in bio-related applications are typically surrounded by excess liquid such as cell media. As shown by previous studies , , the mechanical properties of hydrogels are largely dependent on the concentration of polymer or polymer volume fraction of the hydrogel network.The polymer volume fraction in a hydrogel, however, may be altered if the hydrophilic polymer network imbibes
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Elastic properties of highly crosslinked polyacrylamide gels. J. Baselga, I. Hernandez-Fuentes, I. F. Pierola, and ; Polyacrylamide gel formed by Cr(III) and phenolic resin for water control in high-temperature reservoirs. Mechanical properties of graphene oxide–polyacrylamide composites before and after swelling in water.
Mechanical response of HEMA gel under cyclic deformation: Viscoplasticity and swelling-induced recovery. International Journal of Solids and Structures 2015 , 52 , 220-234. DOI: 10.1016/j.ijsolstr.2014.10.009.
Electroactive Smart Polymers for Biomedical Applications
For intrinsic conductive polymers, one the most relevant drawback is the lack of a proper biodegradation among other issues such as poor polymer–cell interactions, the absence of cell interaction sites, hydrophobicity, processability, and mechanical properties . The most common strategy to overcome these issues is to mix the electroactive
Swelling properties and stimuli response of hydrogels To measure the swelling ratio, pre-weighed dry samples were immersed in a CaCl 2 solution (0.1 M) at room temperature (25 °C). After removing the water excess on the sample surface using a filter paper, the weight of the swollen samples was measured at different times.
1. Introduction
Polyacrylamide (PAM) is a water-soluble polymer, and Figure 5 shows the structure unit of PAM polymer. PAM is widely used for EOR, water treatment, and soil amendment effects because PAM is more effective and relatively inexpensive [36 – 38].For EOR, partially hydrolyzed polyacrylamide (HPAM) solution with 0.5 wt.% NaOH showed a better sweep efficiency than polymer flood [37].
Preparation and swelling behavior of pH-sensitive and saltresistant amphoteric semi-IPNs hydrogels based on starch phosphate and poly[2-[(methacryloyloxy) ethyl] trimethylammonium] chloride; Mechanical and hygrothermal aging study on quaternary polyamide 6/maleated styrene-ethylene-butylenestyrene/ clay/short glass fiber hybrid composites
- Can ionic polyacrylamide/graphene oxide hydrogel be used as methylene blue adsorbent?
- The ionic polyacrylamide/graphene oxide (PAM/GO) hydrogel as an excellent methylene blue (MB) adsorbent was prepared by an improved one-step radical polymerization method using graphene oxide, acrylamide, and polar second monomers.
- Does graphene improve the biocompatibility of polyacrylamide hydrogels?
- Martín C, Merino S, González-Domínguez JM, Rauti R, Ballerini L, Prato M, et al. Graphene improves the biocompatibility of polyacrylamide hydrogels: 3D polymeric scaffolds for neuronal growth.
- Can graphene be used as a hydrophilic polymer?
- Graphene and graphene derivatives (e.g., graphene oxide (GO)) have been widely formulated with hydrophilic polymers to improve the properties of hydrogels, such as mechanical properties, electrical conductivity, and drug loading/release (Fig. 1).
- Why are graphene derivatives used in hydrogels?
- Graphene derivatives (e.g., graphene oxide (GO)) have been incorporated in hydrogels to improve the properties (e.g., mechanical strength) of conventional hydrogels and/or develop new functions (e.g., electrical conductivity and drug loading/delivery) for various biomedical applications.
