Surface biological functionalization method for hydrophobic medical high polymer materials

• Main Authors: LV LANXIN, WANG YANYAN, HUANG NINGPING
• Format: Patent
• Language: Chinese; English
• Published: 29.06.2011
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; GENERAL PROCESSES OF COMPOUNDING; HUMAN NECESSITIES; HYGIENE; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MEDICAL OR VETERINARY SCIENCE; METALLURGY; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

A major part of medical high polymer materials are hydrophobic and do not have bioactivity, so it is very necessary to perform the biological functionalization modification of the surface of the medical high polymer materials so as to improve the biological compatibility of the materials. By taking poly(hydroxybutyrate-hydroxyvalerate) (PHBV) which is a non-immunogenic biological material for example, the inventor provides the surface biological functionalization method for the hydrophobic medical high polymer materials. Through ammonia plasma treatment or modifying dopamine, amino can be introduced onto the surface of the PHBV, and consequently the surface of the PHBV can be modified with polyethylene glycol molecules (NHS-PEG-MAL) with different functional groups at terminal and short peptides containing arginine-glycine-aspatic acid (RGD). In-vitro cell experiments and protein absorption experiments prove that the biological compatibility of the modified PHBV is improved obviously. The introduced RGD short