Preparation and characterisation of multilayer films and microcapsules containing poly(N-isopropylacrylamide-co-sodium vinylsulphonate) and applicability on controlled release.
Summary of "Preparation and characterisation of multilayer films and microcapsules containing poly(N-isopropylacrylamide-co-sodium vinylsulphonate) and applicability on controlled release."
The copolymers of N-isopropylacrylamide and sodium vinylsulphonate were synthesised by free radical polymerisation. The layer-by-layer self-assembly of the copolymers with poly(allylamine) hydrochloride was performed through assembling onto silicon wafer to form multilayer films and onto CaCO(3) microparticles doped with poly(styrene sulphonate) as well as deltamethrin microcrystals to form microcapsules. The multilayer films and microcapsules were characterised by atomic force microscopy, transmission electron microscopy and scanning electron microscopy. The release behaviour of deltamethrin in the microcapsules under different conditions was also investigated by high performance liquid chromatography. Results show that these deltamethrin microcapsules have good thermo-sensitive properties and deltamethrin release can be controlled via changing temperature or self-assembly layers.
Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University , Jinan 250100 , P.R. China.
This article was published in the following journal.
Name: Journal of microencapsulation
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22746547
- DOI: http://dx.doi.org/10.3109/02652048.2012.700958
Medical and Biotech [MESH] Definitions
Poly(a)-binding Protein Ii
A poly(A) binding protein that is involved in promoting the extension of the poly A tails of MRNA. The protein requires a minimum of ten ADENOSINE nucleotides in order for binding to mRNA. Once bound it works in conjunction with CLEAVAGE AND POLYADENYLATION SPECIFICITY FACTOR to stimulate the rate of poly A synthesis by POLY A POLYMERASE. Once poly-A tails reach around 250 nucleotides in length poly(A) binding protein II no longer stimulates POLYADENYLATION. Mutations within a GCG repeat region in the gene for poly(A) binding protein II have been shown to cause the disease MUSCULAR DYSTROPHY, OCULOPHARYNGEAL.
Instructional Films And Videos
Works consisting of nonfiction films and video designed to teach, instruct, or train. (From Moving Image Materials: Genre Terms, 1988)
Documentaries And Factual Films
Works consisting of films, videos, and programs which depict actual persons or actual events. They do not include frank historical re-creations and do not attempt to judge the truth of the depiction in a film purporting to be factual or documentary in character. (From Moving Image Materials: Genre Terms, 1988)
Poly(a)-binding Protein I
A poly(A) binding protein that has a variety of functions such as mRNA stabilization and protection of RNA from nuclease activity. Although poly(A) binding protein I is considered a major cytoplasmic RNA-binding protein it is also found in the CELL NUCLEUS and may be involved in transport of mRNP particles.
The addition of a tail of polyadenylic acid (POLY A) to the 3' end of mRNA (RNA, MESSENGER). Polyadenylation involves recognizing the processing site signal, (AAUAAA), and cleaving of the mRNA to create a 3' OH terminal end to which poly A polymerase (POLYNUCLEOTIDE ADENYLYLTRANSFERASE) adds 60-200 adenylate residues. The 3' end processing of some messenger RNAs, such as histone mRNA, is carried out by a different process that does not include the addition of poly A as described here.
The assembly of multifunctional nanostructures bearing G-quadruplex motifs broadens the prospects of using G-quadruplexes as therapeutic carriers. Herein, we report the synthesis and characterization...
Hollow multilayer microcapsules made of aliphatic poly(urethane-amine) (PUA) and sodium poly(styrene sulfonate) (PSS), templated on PSS-doped CaCO(3) particles, are prepared for pH-/thermally responsi...
Spectroscopic ellipsometry has been used to investigate the optical properties of poly(ferrocenylsilane) polyion multilayer thin films in the visible and near-infrared range of the spectrum. The thin...
Aptamer-polyelectrolyte microcapsules are prepared for potential use as triggered delivery vehicles and microreactors. The hollow microcapsules are prepared from the sulforhodamine B aptamer and the p...
Colorimetric temperature sensors are prepared from photo-crosslinkable polymers by sequentially spin-coating and crosslinking alternating layers of poly(N-isopropylacrylamide) and poly(para-methyl sty...
Users of Breezy candy will utilize the candy's abrasiveness to scrape tongue surface. The scraping action together with the release of compounds contained inside the abrasive microcapsules...
The purpose of this study is to determine what side effects CP 870,893 may cause when given with an immune stimulant called Oncovir poly IC:LC along with a melanoma vaccine. The CP 870,893...
RATIONALE: Biological therapies such as poly-ICLC use different ways to stimulate the immune system and stop tumor cells from growing. PURPOSE: This phase II trial is studying how poly-IC...
This is a pilot vaccine study in adults with either WHO grade II astrocytoma or oligoastrocytoma. The purpose of this study is test the safety and efficacy of an experimental tumor vaccine...
This is a pilot vaccine study in adults with recurrent WHO Grade II gliomas. The purpose of this study is to test the safety and efficacy of an experimental tumor vaccine made from peptide...