Laser processing of polyethylene glycol derivative and block copolymer thin films

被引：9
|
作者：
Cristescu, R. [1 ]
Popescu, C. [1 ]
Popescu, A. C. [1 ]
Grigorescu, S. [1 ]
Duta, L. [1 ]
Mihailescu, I. N. [1 ]
Andronie, A. [2 ]
Stamatin, I. [2 ]
Ionescu, O. S. [3 ]
Mihaiescu, D. [3 ]
Buruiana, T. [4 ]
Chrisey, D. B. [5 ]
机构：
[1] Natl Inst Laser Plasma & Radiat Phys, RO-77125 Bucharest, Romania
[2] Univ Bucharest, Nano SE Res Ctr 3, Bucharest, Romania
[3] Univ Agr Sci & Vet Med, Bucharest, Romania
[4] Petru Poni Inst Macromol Chem, R-6600 Iasi, Romania
[5] Rensselaer Polytech Inst, Dept Mat Sci, Troy, NY 12180 USA
来源：
APPLIED SURFACE SCIENCE | 2009年 / 255卷 / 10期
关键词：
Controlled drug release; Porous polymers; Thin films; Matrix assisted pulsed laser evaporation; DRUG-DELIVERY SYSTEMS; EVAPORATION; DEPOSITION; PULLULAN; MAPLE;
D O I：
10.1016/j.apsusc.2008.09.060
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：
We report the deposition by MAPLE of: (i) a novel polyethylene glycol derivative with carboxyl functional groups and (ii) a block copolymer: poly(ethylene glycol) methyl ether-block-poly(caprolactone)-block-poly(ethylene glycol) methyl ether. We used a KrF* excimer laser source (lambda = 248 nm, tau = 25 ns, nu = 5 Hz). The laser fluence was set within the 200-700 mJ/cm(2) range. The deposited thin films have been investigated by FTIR and AFM. We have concluded that the main functional groups of starting materials are present in the transferred film. We also examined the influence of laser fluence on both thin film structure and morphology. (C) 2008 Elsevier B. V. All rights reserved.
引用
收藏
页码：5605 / 5610
页数：6
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