The Potential Use of Modified Diatomite as Controlled Release Devices for Antifoulants

2015 ◽  
Vol 5 (3) ◽  
pp. 204-207
Author(s):  
Tong Jian Zhao ◽  
Xian Shuo Cao ◽  
Jian Bao Li ◽  
Xiao Long Yu ◽  
Yang Cao ◽  
...  
Keyword(s):  
Controlled Release ◽  
Release Devices ◽  
Potential Use ◽  
Modified Diatomite

Study and Fabrication of Acid-Modified Diatomite

2012 ◽  
Vol 512-515 ◽  
pp. 2175-2178
Author(s):  
Yan Jiang ◽  
Hua Ye ◽  
Li Na He
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Acid Treatment ◽  
Great Increase ◽  
Acid Modification ◽  
Catalyst Carrier ◽  
Modification Process ◽  
Large Mesopores ◽  
Potential Use ◽  
Modified Diatomite

This paper presents an investigation of the purification and activation of a raw diatomite by acid treatment. In the acid modification process, the SiO2 gel powder was adsorbed partially into the pure diatomite, blocking macropores and large mesopores of diatomite, which resulted in great increase of the specific surface area and SiO2 content of diatomite. Thus, the as-prepared diatomite has potential use in the fabrication of catalyst carrier.

Encapsulation and In Vitro Controlled Release of Doxycycline in Temperature-Sensitive Hydrogel Composed of Polyethyleneglycol–polypeptide (L-Alanine-co-L-Aspartate)

2021 ◽  
Vol 49 ◽  
pp. 119-129
Author(s):  
Shamo Zokhrab Tapdiqov
Keyword(s):  
Controlled Release ◽  
Correlation Coefficients ◽  
Zero Order ◽  
Temperature Sensitive ◽  
Poly Ethylene Glycol ◽  
Drug Delivery Carrier ◽  
Ft Ir ◽  
Poly Ethylene ◽  
Potential Use

Doxycycline was loaded with synthesized micelles composed of methyl Poly (ethylene glycol-block-poly (L-alanine–co–L-aspartate), or mPEG–Ala–Asp, and then characterized as a drug delivery carrier. The synthesis of the temperature-sensitive mPEG–Ala–Asp block copolymer was carried out by two-step ring-opening polymerization: firstly, the mPEG reacts with L-alanine N-carboxylic anhydride, and secondly the resulting mPEG–Ala reacts with benzyl aspartate N-carboxylic anhydride. The molecular structure of the copolymers obtained was determined by FT-IR and NMR spectroscopy methods and the micelles were characterized by SEM, TEM and DLS, respectively. The controlled release of Dox from hydrogel in the presence of PBS (8 to 9% by weight) lasts 6 to 7 days exhibiting stable release rates. The drug release mechanisms were studied: Higuchi and zero order models. The results and correlation coefficients applied to the Higuchi and zero-order models. The findings show the potential use of mPEG–Ala–Asp as an effective depot matrix to deliver anthracycline class drugs.

Controlled Release Devices

1987 ◽  
pp. 429-432
Author(s):  
D. K. Hayes ◽  
R. W. Miller ◽  
H. Jaffe
Keyword(s):  
Controlled Release ◽  
Release Devices

Bionanocomposites based on cationic and anionic layered clays as controlled release devices of amoxicillin

2019 ◽  
Vol 173 ◽  
pp. 35-45 ◽  
Author(s):  
Ediana P. Rebitski ◽  
Gabriel P. Souza ◽  
Sirlane A.A. Santana ◽  
Sibele B.C. Pergher ◽  
Ana C.S. Alcântara
Keyword(s):  
Controlled Release ◽  
Layered Clays ◽  
Release Devices

Use of microcapsules as controlled release devices for coatings

2015 ◽  
Vol 222 ◽  
pp. 18-43 ◽  
Author(s):  
Markus Andersson Trojer ◽  
Lars Nordstierna ◽  
Jonatan Bergek ◽  
Hans Blanck ◽  
Krister Holmberg ◽  
...  
Keyword(s):  
Controlled Release ◽  
Release Devices
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