Water absorption, retention and the swelling characteristics of cassava starch grafted with polyacrylic acid

Witono, Judy Retti; Noordergraaf, Inge-Willem; Heeres, Hero J.; Janssen, Ljj Jos

doi:10.1016/j.carbpol.2013.12.056

Cited by 165 publications

(124 citation statements)

References 35 publications

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“…A gravimetric method was carried out to determine the water absorption capacity of collagen sponges [49]. Different sponges were cut into 10×10 mm 2 pieces and were weighed at dry status ( W d ); these pieces were then immersed in the distilled water at room temperature and water on the surface was removed with the help of filter paper.…”

Section: Methodsmentioning

confidence: 99%

Isolation, Characterization and Evaluation of Collagen from Jellyfish Rhopilema esculentum Kishinouye for Use in Hemostatic Applications

et al. 2017

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Hemostat has been a crucial focus since human body is unable to control massive blood loss, and collagen proves to be an effective hemostat in previous studies. In this study, collagen was isolated from the mesoglea of jellyfish Rhopilema esculentum Kishinouye and its hemostatic property was studied. The yields of acid-soluble collagen (ASC) and pepsin-soluble (PSC) were 0.12% and 0.28% respectively. The SDS-PAGE patterns indicated that the collagen extracted from jellyfish mesoglea was type I collagen. The lyophilized jellyfish collagen sponges were cross-linked with EDC and interconnected networks in the sponges were revealed by scanning electron microscope (SEM). Collagen sponges exhibited higher water absorption rates than medical gauze and EDC/NHS cross-linking method could improve the stability of the collagen sponges. Compared with medical gauze groups, the blood clotting indexes (BCIs) of collagen sponges were significantly decreased (P < 0.05) and the concentration of collagen also had an influence on the hemostatic property (P < 0.05). Collagen sponges had an improved hemostatic ability compared to the gauze control in tail amputation rat models. Hemostatic mechanism studies showed that hemocytes and platelets could adhere and aggregate on the surface of collagen sponge. All properties make jellyfish collagen sponge to be a suitable candidate used as hemostatic material and for wound healing applications.

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Section: Methodsmentioning

confidence: 99%

Isolation, Characterization and Evaluation of Collagen from Jellyfish Rhopilema esculentum Kishinouye for Use in Hemostatic Applications

et al. 2017

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“…In the swelling process, the water transport mechanism of mCS‐PEG gel beads was also evaluated using the following equation:

normallog (|, \frac{true}{M_{t}}) = normallog (|, k) + n normallog (|, t)

where

M_{t}

(g/g) and

M_{normale}

(g/g) are the mass of water absorbed by the mCS‐PEG gel beads at contact time

t

(min) and at swelling equilibrium, respectively. Here,

k

is the characteristic constant and

n

is a diffusion exponent.…”

Section: Resultsmentioning

confidence: 99%

Magnetic iron oxide nanoparticles (MIONs) cross‐linked natural polymer‐based hybrid gel beads: Controlled nano anti‐TB drug delivery application

Kesavan¹,

Ayyanaar²,

Vijayakumar

et al. 2017

J Biomedical Materials Res

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The nanosized rifampicin (RIF) has been prepared to increase the solubility in aqueous solution, which leads to remarkable enhancement of its bioavailability and their convenient delivery system studied by newly produced nontoxic, biodegradable magnetic iron oxide nanoparticles (MIONs) cross-linked polyethylene glycol hybrid chitosan (mCS-PEG) gel beads. The functionalization of both nano RIF and mCS-PEG gel beads were studied using various spectroscopic and microscopic techniques. The size of prepared nano RIF was found to be 70.20 ± 3.50 nm. The mechanical stability and swelling ratio of the magnetic gel beads increased by the addition of PEG with a maximum swelling ratio of 38.67 ± 0.29 g/g. Interestingly, this magnetic gel bead has dual responsive assets in the nano drug delivery application (pH and the magnetic field). As we expected, magnetic gel beads show higher nano drug releasing efficacy at acidic medium (pH = 5.0) with maximum efficiency of 71.00 ± 0.87%. This efficacy may also be tuned by altering the external magnetic field and the weight percentage (wt%) of PEG. These results suggest that such a dual responsive magnetic gel beads can be used as a potential system in the nano drug delivery applications. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 1039-1050, 2018.

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“…Based on the data observed, as it's shown in Figure 2, the highest % add-on is obtained at around 2 -2.5% crosslinker added and after that tends to go down. It may cause of the properties of the crosslinker (N,N'-methylenebisacrylamide) itself which in the high concentration can be autopolymerized especially if there is an oxidizing agent (Witono, J. R., et al, 2014). So, the effect of the crosslinker goes down.…”

Section: %Add-onmentioning

confidence: 99%

“…In this work, the adsorbent is produced by attaching the acrylic acid monomer onto the macromolecule starch backbone and together with the crosslinker which is integrated inside the network creates a strong 3-D network (Witono, J. R., et al, 2014). The variation amount of crosslinker added is observed in related to the ability of copolymer to adsorp heavy metal in the solution (waste water).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Crosslinker and Pore Generated on Selective Adsorbent (Cu2+) based on Grafting of Acrylic Acid onto Cassava Starch

Witono¹,

Henrietta²,

Miryanti³

2015

MAS

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The technology development in many industries nowadays, such as electronic industry produces heavy metal wastes which may pollute our environment. The use of adsorbent as a heavy metal removal from soil and water is one of the efficient process which can be considered to be used. In addition the release of the adsorbate becomes an important way as well because usually those heavy metals still have a high value. The objective of this research is to develop adsorbent based on cassava starch. So, the release process will become easier and will not produce another waste. The adsorbent was produced through the grafting of acrylic acid onto cassava starch by using Fenton initiator. To construct a stable 3-D network, the crosslinker (CL) N,N'-methylenebisacrylamide was added. The variable observed were the amount of CL added (0.5%; 1.5%; 2.5% and 3.5%) and the treatment of generating more pores on starch copolymer. The treatments on starch copolymer observed were single freezing, second freezing, and citric acid modification and carbonization methods. Analysis performed on the adsorbent was % add-on, water absorption and metal adsorption (especially Cu 2+ ion) capacity. The result showed that the used of 2.5% CL produced the highest add-on (47.66 %), the highest water absorption capacity and the highest metal adsorption capacity (0.29g Cu 2+ /g adsorbent) The citric acid modification also produced the highest pores on the adsorbent.

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Water absorption, retention and the swelling characteristics of cassava starch grafted with polyacrylic acid

Cited by 165 publications

References 35 publications

Isolation, Characterization and Evaluation of Collagen from Jellyfish Rhopilema esculentum Kishinouye for Use in Hemostatic Applications

Isolation, Characterization and Evaluation of Collagen from Jellyfish Rhopilema esculentum Kishinouye for Use in Hemostatic Applications

Magnetic iron oxide nanoparticles (MIONs) cross‐linked natural polymer‐based hybrid gel beads: Controlled nano anti‐TB drug delivery application

The Effect of Crosslinker and Pore Generated on Selective Adsorbent (Cu2+) based on Grafting of Acrylic Acid onto Cassava Starch

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