Freeze-Dried Matrices Composed of Degradable Polymers with Surfactant-Loaded Microparticles Based on Pectin and Sodium Alginate

被引:11
作者
Stachowiak, Natalia [1 ]
Kowalonek, Jolanta [1 ]
Kozlowska, Justyna [1 ]
机构
[1] Nicolaus Copernicus Univ Torun, Fac Chem, Gagarina 7, PL-87100 Torun, Poland
关键词
sodium alginate; pectin; microparticles; surfactant; porous matrix; degradable polymer; PROTEIN MICROPARTICLES; DRUG-RELEASE; CHITOSAN; GELATIN; ACID; MICROSPHERES; SPONGES; MICROENCAPSULATION; REHYDRATION; PARAMETERS;
D O I
10.3390/ma14113044
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Gelatin/polyvinylpyrrolidone/hydroxyethyl cellulose/glycerol porous matrices with microspheres made of sodium alginate or pectin and sodium alginate were produced. A surfactant was loaded into these microparticles. The microspheres were characterized using optical microscopy, scanning electron microscopy SEM, and laser diffraction particle size analyzer. For the matrices, the density, porosity, swelling capacity, dissolution in phosphate saline buffer were determined and SEM, mechanical, and thermogravimetric studies were applied. The results showed that the size of the two-component microspheres was slightly larger than that of single-ingredient microparticles. The images confirmed the spherical shape of the microparticles. The prepared matrices had high water uptake ability and porosity due to the presence of hydrophilic polymers. The presence of microparticles in the matrices caused a decrease in these parameters. Degradation of the composites with the microspheres was significantly faster than the matrix without them. The addition of microparticles increased the stiffness and toughness of the prepared materials. The efficiency of the thermal decomposition main stage was reduced in the samples with microspheres, whereas a char residue increased in these composites.
引用
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页数:15
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