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Helium Plasma Effects on polymer Surfaces:from Plasma Parameters and Surface Properties towards Bioengineering Applications

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Chinese Journal of polymer Science 2024年第8期42卷 1156-1166页

作者： Andrei Vasile Nastuta Maria Butnaru Byron Cheatham Ramona Huzum Vasile Tiron Ionut Topala Physics and Biophysics Education Research Laboratory(P&B-EduResLab) Biomedical Science DepartmentFaculty of Medical Bioengineering‘Grigore T.Popa’University of Medicine and Pharmacy IasiM.Kogalniceanu 9-13Iasi 700454Romania Faculty of Medical Bioengineering ‘Grigore T.Popa’University of Medicine and Pharmacy IasiM.Kogalniceanu 9-13Iasi 700454Romania Cytoviva Inc.570 Devall Drive Suite 301Auburn 36832ALUSA Integrated Center of Environmental Science Studies in the North-Eastern Development Region(CERNESIM) Department of Exact and Natural SciencesInstitute of Interdisciplinary Research‘Alexandru Ioan Cuza’University of IasiBlvd.Carol I no.11Iasi 700506Romania Research Center on Advanced Materials and Technologies(RAMTECH) Department of Exact and Natural SciencesInstitute of Interdisciplinary Research‘Alexandru Ioan Cuza’University of IasiBlvd.Carol I no.11Iasi 700506Romania Iasi Plasma Advanced Research Center(IPARC) Faculty of Physics‘Alexandru Ioan Cuza’University of IasiBlvd.Carol I no.11Iasi 700506Romania

Plasma treatment is necessary to optimize the performance of biomaterial *** enhances and regulates the performance of biomaterial su rfaces,creating an effective interface with the human *** treatments have the ability to modify the chemical com position and physical structu re of a surface while leaving its properties *** possess the ability to modify material su rfaces,eliminate contaminants,conduct investigations on cancer therapy,and facilitate wound *** subject of study in question involves the integration of plasma science and technology with biology and *** a helium plasma jet source,applying up to 18 kV,with an average power of 10 W,polymer foils were treated for 60 *** treatment has the ability to alter the chemical composition and physical structure of a su rface while maintaining its *** investigation involved the application of helium plasma at atmospheric pressure to polyamide 6 and polyethylene terephthalate *** inquiry involves monitoring and assessing the plasma source and polymer materials,as well as analyzing the impacts of plasma *** the mean power of the discharge aids in assessing the economic efficacy of the plasma *** discharge in helium at atmospheric pressure has beneficial effects in technology,where it increases the surface free energy of polymer *** biomedicine,it is used to investigate cytotoxicity and cell survival,particularly in direct blood exposure situations that can expedite *** the specific parameters that influence the plasma source in the desired manner for the intended application is of utmost im portance.

关键词： Atmopheric pressure plasmas Plasma-polymer interaction Plasma Medicine Plasma diagnosis polymer characterization

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SYNTHESIS AND THERMAL PROPERTIES OF A NEW CHOLIC ACIDCONTAINING COpolymer

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Chinese Journal of polymer Science 2003年第5期21卷 521-526页

作者： Zheng-ji Song Hong Li Xiao-xia Zhu Departement de Chimie, Universitd de Montreal, C P. 6128, Succursale Centre-ville, Montreal, Quebec, H3C 3J7 Canada State Key Laboratory of Functional Polmer Materials for Adsorption and Separation, Institute of polymer Chemistry Nankai University Tianjin 300071, China Departement de Chimie Universite de Montreal C. P. 6128 Succursale Centre-ville Montreal 加拿大 Quebec H3C 3J7 Institute of polymer Chemistry Nankai University State Key Laboratory of Functional Polymer Materials for Adsorption and Separation 天津 300071

A new copolymer was synthesized by free radical polymerization in solution from methyl 3α-methylacryloyl-7α, 12α-dihydroxy-5β-cholan-24-oate (MACAME) and maleic anhydride (MAN). The copolymer was characterized by FT-IR and functional group analysis. The reactivity ratios of the two monomers were estimated [r_1 = 11.6 (MACAME), r_2 = 0.01(MAN)] by conducting a series of copolymerizations with a variety of monomer feed compositions and analyzing thecopolymer composition. Thermogravimetric and differential scanning calorimetric analyses of the samples indicate that thecopolymer possesses good thermal stability. The temperature at which the copolymer samples experienced a 10% weight loss(T_(WL)) is over 287℃, and the T_g ranged from 174 to 185℃ for the copolymers.

关键词： Cholic acid Maleic anhydride Copolymer Photoresist polymer characterization

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An Effective SALS Image Denoising Method based on 2-D Discrete Wavelet Decomposition

An Effective SALS Image Denoising Method based on 2-D Discre...

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2012 National Conference on Information Technology and Computer Science

作者： Guang-ming Xian Information Engineering and Technology Department,South China Normal University,Foshan,Guangdong 528225,China Bi-qing Zeng Information Engineering and Technology Department,South China Normal University,Foshan,Guangdong 528225,China

This paper describes an effective small angle light scattering (SALS) image denoising method based on 2-D discrete wavelet *** phenomenon of small angle light scattering has been applied to giving information about transparent structures on *** potential of using SALS to probe morphological changes induced by flow in polymer melts is ***-defined flow of polymer melts histories in a visual slit die are shown to result in SALS patterns that are characteristic for the morphology *** current study utilizes a 2-D discrete wavelet to delete noise from the original SALS image and estimate the variation trend of maximum intensity area of the scattered *** compare the SALS denoising result,four commonly used wavelets,named haar wavelet,db2 wavelet,Coi4 and Sym5 wavelet are taken into *** can also be observed that db2 wavelet obtain the best denoising result in the four wavelts.

关键词： Small angle light scattering image 2-D discrete wavelet decomposition polymer characterization image denoising

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