Preparation and surface activity of gelatin derivative surfactants

Lin, Li‐Huei; Chen, Keng‐Ming

doi:10.1016/j.colsurfa.2005.07.006

Cited by 44 publications

(25 citation statements)

References 20 publications

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“…The size of AgNPs without gelatin showed a wider range of particle size distribution (from 7 to 85 nm in diameter) with an average diameter of 36 nm (Figures 2c and 3c). This can be particularly explained by the fact that gelatin forms the coating on the surface of AgNPs during the particle growth process and prevents an aggregation through a steric hindrance due to its high molecular weight and significant surface activity [4,24].…”

Section: Resultsmentioning

confidence: 99%

Stability of Synthesized Silver Nanoparticles in Citrate and Mixed Gelatin/Citrate Solution

Kavuličová¹,

Mražíková²,

Velgosová³

et al. 2018

Acta Polytech

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Abstract. The study focuses on an investigation of the influence of both citrate and mixed gelatin/citrate as a reductant and stabilizer on the colloidal stability of silver nanoparticles (AgNPs) synthesized by a chemical reduction of Ag + ions after a short-(7th day) and long-(118th day) term storage. Formed AgNPs were characterized by a UV-vis Spectroscopy, Transmission Electron Microscope (TEM), Dynamic light scattering (DLS) and Zeta-potential (ZP). The obtained results revealed that a short-term stability of the synthesized AgNPs was greatly influenced by a citrate stabilizer with the absence of gelatin. Smaller-sized AgNPs (average particle diameter of 3 nm), roughly spherical in a shape, were obtained with a narrow size distribution. The very negative value of the Zeta-potential confirmed a strong stability of the citrate capped AgNPs. However, a surface coating of the AgNPs by a gelatin/citrate stabilizer was found to be a dominant contributor in improving a long-term stability of the AgNPs (average particle diameter of 26 nm). The use of gelatin in mixed stabilizer solution provided the AgNPs with higher monodispersity and a controllable size after both the short and long-term storage.

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Section: Resultsmentioning

confidence: 99%

Stability of Synthesized Silver Nanoparticles in Citrate and Mixed Gelatin/Citrate Solution

Kavuličová¹,

Mražíková²,

Velgosová³

et al. 2018

Acta Polytech

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“…The macropores are produced because of the amphiphilic nature of gelatin, which entraps air bubbles and makes them stable. 20,21 The size and distribution of the macropores differ by changing the concentration of gelatin molecules.…”

mentioning

confidence: 99%

Blooming gelatin: an individual additive for enhancing nanoapatite precipitation, physical properties, and osteoblastic responses of nanostructured macroporous calcium phosphate bone cements

Orshesh¹,

Hesaraki²,

Khanlarkhani³

2017

IJN

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In recent years, there has been a great interest in using natural polymers in the composition of calcium phosphate bone cements to enhance their physical, mechanical, and biological performance. Gelatin is a partially hydrolyzed form of collagen, a natural component of bone matrix. In this study, the effect of blooming gelatin on the nanohydroxyapatite precipitation, physical and mechanical properties, and cellular responses of a calcium phosphate bone cement (CPC) was investigated. Various concentrations of blooming gelatin (2, 5, and 8 wt.%) were used as the cement liquid and an equimolar mixture of tetracalcium phosphate and dicalcium phosphate was used as solid phase. The CPC without any gelatin additive was also evaluated as a control group. The results showed that gelatin accelerated hydraulic reactions of the cement paste, in which the reactants were immediately converted into nanostructured apatite precipitates after hardening. Gelatin molecules induced 4%–10% macropores (10–300 μm) into the cement structure, decreased initial setting time by ~190%, and improved mechanical strength of the as-set cement. Variation in the above-mentioned properties was influenced by the gelatin concentration and progressed with increasing the gelatin content. The numbers of the G-292 osteoblastic cells on gelatin-containing CPCs were higher than the control group at entire culture times (1–14 days), meanwhile better alkaline phosphatase (ALP) activity was determined using blooming gelatin additive. The observation of cell morphologies on the cement surfaces revealed an appropriate cell attachment with extended cell membranes on the cements. Overall, adding gelatin to the composition of CPC improved the handling characteristics such as setting time and mechanical properties, enhanced nanoapatite precipitation, and augmented the early cell proliferation rate and ALP activity.

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“…KIT-6 disintesis dari campuran triblok kopolimer-butanol sebagai agen pengarah struktur menghasilkan silika mesopori tipe batang dan tabung dengan simetri kubus Ia3d [16], [7], [10], [34] CKT-1 semi heksagonal [88] CKT-2 disorder cubic [89] C-125 semi batang inner-outer [90] CMM semi sangkar pori ganda [91] CSS Seminkubus [92] CP-1 sangkar kubus [93] OMCG sangkar semi kubus [94] Ada dua macam teknik sintesis karbon mesopori yaitu cetakan padat dan cetakan lunak. Cetakan padat menggunakan padatan berpori sebagai tempat pengendapan prekursor karbon [20], [77], [78], [57], [61], [79], [80], sedangkan cetakan lunak menggunakan surfaktan sebagai agen pengarah struktur [25], [59], [67], [70], [81]- [86]. Kedua teknik tersebut menghasilkan beragam struktur karbon mesopori terutama di 25 tahun terakhir.…”

Section: Perkembangan Prekursor Karbon Mesoporiunclassified

Mesoporous Carbon in the Global World

Ulfa

2017

JKPK

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Selama 25 tahun terakhir, fokus penelitian material bergeser ke arah nanomaterial.Material berbasis karbon khususnya jenis karbon mesopori menarik perhatian banyak peneliti karena faktor keteraturan struktur dan sifat fisika-kimia yang bagus. Keterlibatan karbon mesopori cukup besar dalam dunia khususnya industri karena faktor porositas dan regularitas struktur yang baik untuk reaksi-reaksi skala makro. Dalam 25 tahun terakhir topik utama penelitian karbon mesopori fokus untuk menghasilkan material tiga dimensi yang mempu mengakomodir mekanisme reaksi yang melibatkan molekul besa dengan memperhatikan aspek preparasi, sintesis dan aplikasinya. Review ini akan mengkaji perkembangan kabon mesopori antara tahun 1999 hingga 2017. Kajian akan difokuskan pada perkembangan karbon mesopori dari sisi prekursor, metode sintesis, serta aplikasinya dalam dunia modern baik sebagai adsorben, katalis maupun material canggih lainnya.

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Preparation and surface activity of gelatin derivative surfactants

Cited by 44 publications

References 20 publications

Stability of Synthesized Silver Nanoparticles in Citrate and Mixed Gelatin/Citrate Solution

Stability of Synthesized Silver Nanoparticles in Citrate and Mixed Gelatin/Citrate Solution

Blooming gelatin: an individual additive for enhancing nanoapatite precipitation, physical properties, and osteoblastic responses of nanostructured macroporous calcium phosphate bone cements

Mesoporous Carbon in the Global World

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