Low-temperature plasma treatment of polylactic acid and PLA/HA composite material

被引：63

作者：

Laput, Olesya ^{[1
]}

Vasenina, Irina ^{[1
,2
,3
]}

Salvadori, Maria Cecilia ^{[1
,4
]}

Savkin, Konstantin ^{[2
]}

Zuza, Daniil ^{[1
,2
]}

Kurzina, Irina ^{[1
]}

机构：

[1] Natl Res Tomsk State Univ, 36 Lenin Ave, Tomsk 634050, Russia

[2] Inst High Current Elect, 2-3 Akad Sky Ave, Tomsk 634055, Russia

[3] PN Lebedev Phys Inst, 53 Leninsky Prospect, Moscow 119333, Russia

[4] Univ Sao Paulo, 1371 Rua Matao, BR-05508090 Sao Paulo, SP, Brazil

来源：

JOURNAL OF MATERIALS SCIENCE | 2019年 / 54卷 / 17期

关键词：

L-LACTIC ACID; ION-IMPLANTATION; SURFACE MODIFICATION; CATIONIZED GELATIN; POLY(LACTIC ACID); CALCIUM-PHOSPHATE; CELL AFFINITY; FILMS; PLLA; DISCHARGE;

D O I：

10.1007/s10853-019-03693-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Investigations of the surface physicochemical properties of polylactic acid and polylactic acid/hydroxyapatite composite in a 70/30 ratio modified by atmospheric pressure low-temperature glow discharge argon plasma with the pulse duration of 1s and 5s and repetition rate of 100kHz are described. Plasma modification of such materials may significantly affect physicochemical properties of surface. The polymerization of l-lactide was carried out at a temperature of 155 degrees C for 6h. X-ray diffraction analysis shows that the degree of crystallinity of polylactic acid and composites based on polylactic acid/hydroxyapatite composite increases after plasma treatment due to polymer chain disruption. Infrared spectroscopy indicates that the -C=O absorption band intensity increases with plasma pulse duration, in turn indicating oxidation processes occurring in the polylactic acid surface layers. The wettability characteristics of the materials are improved by the plasma treatment, resulting in decreased water, glycerol, and ethylene glycol contact angle, and enhanced free surface energy.

引用

页码：11726 / 11738

页数：13

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