Fabrication of poly(vinyl alcohol)-Carrageenan scaffolds for cryopreservation: Effect of composition on cell viability

Chopra, Pankaj; Nayak, Debasis; Nanda, Arpita; Ashe, Sarbani; Rauta, Pradipta Ranjan; Nayak, Bismita

doi:10.1016/j.carbpol.2016.04.027

Cited by 38 publications

(19 citation statements)

References 24 publications

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“…Even if PVA/carrageenan chemically-crosslinked or γ radiation-crosslinked hydrogels are already known and their suitability for controlled delivery devices [21][22][23] is under study, there are few studies regarding the obtaining of PVA/CAR cryogels, such as those by Zhang et al [24], Hosseinzadeh [25] and Chopra et al [26], and their use is intended either as composites with various fillers or in lyophilized form. The influence of the quantity of κ-carrageenan on the structural features (intermolecular chemical bonding, crystallinity and morphology) and the sorption/release mechanism in/from the polymer matrix has not been studied extensively up to date for this polymer blend.…”

Section: Introductionmentioning

confidence: 99%

Physically Crosslinked Poly (Vinyl Alcohol)/Kappa-Carrageenan Hydrogels: Structure and Applications

et al. 2020

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This paper discusses the structure morphology and the thermal and swelling behavior of physically crosslinked hydrogels, obtained from applying four successive freezing–thawing cycles to poly (vinyl alcohol) blended with various amounts of κ-carrageenan. The addition of carrageenan in a weight ratio of 0.5 determines a twofold increase in the swelling degree and the early diffusion coefficients of the hydrogels when immersed in distilled water, due to a decrease in the crystallinity of the polymer matrix. The diffusion of water into the polymer matrix could be considered as a relaxation-controlled transport (anomalous diffusion). The presence of the sulfate groups determines an increased affinity of the hydrogels towards crystal violet cationic dye. A maximum physisorption capacity of up to 121.4 mg/g for this dye was attained at equilibrium.

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Section: Introductionmentioning

confidence: 99%

Physically Crosslinked Poly (Vinyl Alcohol)/Kappa-Carrageenan Hydrogels: Structure and Applications

et al. 2020

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“…Completely hydrolyzed PVA is soluble in hot water and has good film-forming properties (the formed film is insoluble in low-temperature water) and good adhesion properties [15,16]. The polyvinyl alcohol after film formation has good deformation properties, toughness, and wear resistance [17,18]. The physical properties of the polyvinyl alcohol film system are very stable.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Microstructure of Polyvinyl Alcohol (PVA) Modified Cement Mortar

Fan

Deng

et al. 2019

Applied Sciences

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The mechanical properties of cement mortars with 0~2.0% (by mass) polyvinyl alcohol (PVA) were experimentally studied, and the effects of PVA incorporation on the hydration products and microstructure of the cement mortar were determined with differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The results show that the rational content of PVA formed evenly dispersed network-like thin films within the cement matrix, and these network-like films can bridge cracks in the cement matrix and improve the mechanical properties of the cement mortar. Over-incorporation of PVA may result in the formation of large piece polymer films that coat the cement particles, delay the hydration of the cement mortar and adversely affect its performance. The mechanical properties of the cement mortar show a significant increase and then decrease with a change in the PVA incorporation. When the PVA content was 0.6% and 1.0%, the mortar had the best compressive and flexural strengths, respectively. The compressive strength of the cement mortar increased by 12.15% for a PVA content of 0.6%, and the flexural strength of the cement mortar increased by 24.83% for a PVA content of 1.0%.change occurs under 140 • C), light, and chemical stability but also has excellent gas and water barrier properties (the inside of polyvinyl alcohol can remain dry under high humidity) [19,20]. The good physical and chemical properties of polyvinyl alcohol and its formed films enable its wide use in the textile, construction, chemical, and papermaking industries, to name a few.Owing to the excellent performance as described above, researchers have utilized PVA to modify the mechanical properties of a cement-based material. Singh et al. [21] found that the addition of 3% of PVA could increase the compressive strength of cement mortar about 12 % due to there exists chemical interaction between PVA and cement hydration. This chemical interaction is effective in improving the interfacial bond between cement hydration and aggregates. Moreover, the chemical products could fill the pores of the cement matrix, resulting in the mechanical properties of the cement matrix increase greatly. Similarly, Kapen et al. [22] demonstrated that the flexural strengths of cement mortar increased by 21% after loading 1% PVA when cured in dry condition, respectively. They stated that this improvement was mainly attributed to the formation of PVA film within the cement matrix. Kim et al. [23] found that the improvement in bond strength after loading PVA seems to arise from suppression of the porous interfacial transition zone and inhibition of calcium hydroxide nucleation on the aggregate surface.Using PVA to enhance the properties of cement composites has attracted extensive attention. However, the previous research mainly focused on the hydration and mechanical properties after loading a mono content of PVA, there is limited information on the effect of PVA with different content on the fresh properties and ...

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“…Carrageenan is a naturally sulfated polysaccharide extracted from red algae of the Rhodophyceae family. It is greatly biocompatible and has extensively been used in the biomedical area . In fact, biopolymers such as cellulose, the most abundant biopolymer in nature, and its derivatives have already been employed as matrix to deposit minerals like calcium carbonate and HAp .…”

Section: Introductionmentioning

confidence: 99%

“…It is greatly biocompatible and has extensively been used in the biomedical area. [19][20][21] In fact, biopolymers such as cellulose, the most abundant biopolymer in nature, and its derivatives have already been employed as matrix to deposit minerals like calcium carbonate 22,23 and HAp. 24 For this reason, cellulose has potential biomedical application in bone tissue engineering.…”

Section: Introductionmentioning

confidence: 99%

Organic–inorganic collagen/iota‐carrageenan/hydroxyapatite hybrid membranes are bioactive materials for bone regeneration

Nogueira

Maniglia

Blácido

et al. 2019

J of Applied Polymer Sci

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This study aimed to produce biomembranes with controlled degradability for application in bone regeneration in order to stimulate biological reactions necessary to improve bone formation. Hydrogels were prepared by dissolving hydrolyzed collagen (HC) and iota‐carrageenan (ι‐Carr) in aqueous mixtures containing CaCl2 and H3PO4. A rise in pH by exposure to NH3(g) caused mineral precipitation into the hydrogel. Subsequently, the membranes were fabricated by solvent casting. Infrared spectroscopy and X‐ray diffraction attested hydroxyapatite formation. The crystallite size was close to 12 nm, which was smaller than the size reported for human bone apatite. The membranes induced bone‐like apatite precipitation in simulated body fluid. The carrageenan content modulated the membrane mechanical behavior. Membranes with controlled degradability were obtained by using higher amount of this polysaccharide. These membranes were able to release HC in physiological conditions. The surface properties were evaluated in terms of wettability and surface energy (γS) by means of contact angle (θc) measurements. Low θc (8.5–16.8) indicated that the hybrid membranes were hydrophilic, while higher γS values, around 70.6 mJ.m−2, could favor biomolecule incorporation into the surface. Our data set evidenced that these materials could potentially be used as a temporary guided tissue regeneration membrane with the possibility of inducing bone regeneration. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48004.

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Fabrication of poly(vinyl alcohol)-Carrageenan scaffolds for cryopreservation: Effect of composition on cell viability

Cited by 38 publications

References 24 publications

Physically Crosslinked Poly (Vinyl Alcohol)/Kappa-Carrageenan Hydrogels: Structure and Applications

Physically Crosslinked Poly (Vinyl Alcohol)/Kappa-Carrageenan Hydrogels: Structure and Applications

Mechanical Properties and Microstructure of Polyvinyl Alcohol (PVA) Modified Cement Mortar

Organic–inorganic collagen/iota‐carrageenan/hydroxyapatite hybrid membranes are bioactive materials for bone regeneration

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