Enhanced cell affinity of poly (D,L-lactide) by combining plasma treatment with collagen anchorage.

Abstract:

:Surface properties of poly (D,L-lactide) (PDLLA) were modified by combining plasma treatment and collagen modification. The changes of surface properties were characterized by contact angles, surface energy, X-ray photoelectron spectra and scanning electron microscopy. The mouse 3T3 fibroblasts were used as model cells to evaluate the cell affinity of PDLLA before and after modification. Effects of different modification methods including plasma treatment, collagen coating and combining plasma treatment with collagen anchorage were investigated and compared. The results showed that the hydrophilicity and surface-free energy were improved and reduced, respectively, after each modification. Plasma pre-treatment could improve the roughness as it incorporated the polar groups and positively charged groups onto the sample surface; so the plasma pre-treated surface would benefit in anchoring more collagen tightly. As a result, cell affinity of PDLLA modified by combining plasma treatment with collagen anchorage was greatly improved. The modified materials could endure rinsing by PBS, which would facilitate further application when the modified materials were used as cells scaffold in tissue engineering.

journal_name

Biomaterials

journal_title

Biomaterials

authors

Yang J,Bei J,Wang S

doi

10.1016/s0142-9612(01)00400-8

keywords:

subject

Has Abstract

pub_date

2002-06-01 00:00:00

pages

2607-14

issue

12

eissn

0142-9612

issn

1878-5905

pii

S0142-9612(01)00400-8

journal_volume

23

pub_type

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