Laser fabrication of composite layers from biopolymers with branched 3D networks of single-walled carbon nanotubes for cardiovascular implants

Gerasimenko Alexander Yu; Kurilova Uliana E.; Savelyev Mikhail S.; Murashko Denis T.; Glukhova Olga E.

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Laser fabrication of composite layers from biopolymers with branched 3D networks of single-walled carbon nanotubes for cardiovascular implants

机译：来自生物聚合物的复合层的激光制造具有用于心血管植入物的单壁碳纳米管的分支3D网络

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A laser technology has been developed for fabricating structures from composite layers based on biopolymers: albumin, collagen, and chitosan with single-walled carbon nanotubes (SWCNT). The structures are intended for cardiovascular devices and tissue-engineered implants. This is evidenced by the results of studies. The composite layers were fabricated due to the phase transition of biopolymers and SWCNT aqueous dispersion under the influence of laser pulses. M the same time branched 3D networks of SWCNT were formed in the biopolymer matrix. The threshold energy fluence of laser pulses was determined (0.032-0.083 J/cm(2)) at which a bimodal distribution of pores was observed. The calculation of contact resistances between nanotubes at percolation units of 3D networks (20-100 kOhm) was carried out. Composite layers fabricated by laser demonstrated conductivity values that were higher (12.4 S/m) than those for layers by thermostat (4.7 S/m). The maximum hardness of the composite layers with SWCNT (0.01 wt%) by laser was 482 +/- 10, 425 +/- 10, and 407 +/- 15 MPa for albumin, collagen and chitosan, respectively. The hardness of the thermostat layers was less than 100 MPa. The viability of endothelial cells in composite layers was improved. The composite layers ensured a normal level of hemolysis during interaction with erythrocytes.

机译：已经开发了一种激光技术，用于制造基于生物聚合物的复合层的结构：白蛋白，胶原和壳聚糖，用单壁碳纳米管（SWCNT）。该结构旨在用于心血管装置和组织工程植入物。这是通过研究结果证明的。由于在激光脉冲的影响下，由于生物聚合物的相转变和SWCNT水分散体的相变，因此制造了复合层。 M在生物聚合物基质中形成相同的分支3D网络的SWCNT。测定激光脉冲的阈值能量（0.032-0.083J / cm（2）），在此时观察到孔的双峰分布。进行了3D网络渗滤单元（20-100 kohm）的纳米管之间接触电阻的计算。由激光制造的复合层显示比恒温器（4.7 s / m）更高（12.4 s / m）的电导率值。用SWCNT（0.01wt％）通过激光的复合层的最大硬度分别为白蛋白，胶原蛋白和壳聚糖的482 +/- 10,425 +/-10和407 +/-15MPa。恒温器层的硬度小于100MPa。改善了复合层中内皮细胞的活力。复合层确保了与红细胞相互作用期间的正常溶血水溶液。

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来源
《Composite Structures》 |2021年第3期|113517.1-113517.13|共13页
作者
Gerasimenko Alexander Yu; Kurilova Uliana E.; Savelyev Mikhail S.; Murashko Denis T.; Glukhova Olga E.;
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作者单位

Natl Res Univ Elect Technol MIET Inst Biomed Syst Bld 1 Shokin Sq Moscow 124498 Russia|IM Sechenov First Moscow State Med Univ Inst Bion Technol & Engn 8 Trubetskay Str Moscow 119991 Russia;

Natl Res Univ Elect Technol MIET Inst Biomed Syst Bld 1 Shokin Sq Moscow 124498 Russia;

Natl Res Univ Elect Technol MIET Inst Biomed Syst Bld 1 Shokin Sq Moscow 124498 Russia|IM Sechenov First Moscow State Med Univ Inst Bion Technol & Engn 8 Trubetskay Str Moscow 119991 Russia;

Natl Res Univ Elect Technol MIET Inst Biomed Syst Bld 1 Shokin Sq Moscow 124498 Russia;

IM Sechenov First Moscow State Med Univ Inst Bion Technol & Engn 8 Trubetskay Str Moscow 119991 Russia|Saratov NG Chernyshevskii State Univ Dept Phys 83 Astrakhanskaya St Saratov 410012 Russia;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
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关键词
Composite layers; Branched 3D networks of single-walled carbon nanotubes; Biopolymers; Laser radiation; Electrical conductivity; Cardiovascular system;

机译：复合层;单壁碳纳米管的分支3D网络;生物聚合物;激光辐射;电导率;心血管系统;

Laser fabrication of composite layers from biopolymers with branched 3D networks of single-walled carbon nanotubes for cardiovascular implants

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