Polylactic acid and preparation method of copolymer support
The invention provides polylactic acid and a preparation method of a copolymer support. The preparation method comprises the following steps that 1), a biodegradable polymer original tube is preparedby biodegradable polymer materials; 2), the original tube is put into a tubular mold for heating, and...
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Format | Patent |
Language | Chinese English |
Published |
11.05.2018
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Abstract | The invention provides polylactic acid and a preparation method of a copolymer support. The preparation method comprises the following steps that 1), a biodegradable polymer original tube is preparedby biodegradable polymer materials; 2), the original tube is put into a tubular mold for heating, and high-pressure gas is injected into the original tube, so that the tube can be highly oriented in the radial direction, and the tube is axially stretched in the axial direction of the tube, so that the simultaneous orientation of the tube in the radial direction and the axial direction is realized;3), an expanded tube is placed at an annealing temperature for 5-30 minutes to anneal so as to obtain the formed tube, wherein the annealing temperature is higher than the glass transition temperature of the polymer materials and is lower than the melting temperature of the polymer materials; and 4) the formed tube is prepared into the polylactic acid and the copolymer support. According to the method, the immediate suppo |
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AbstractList | The invention provides polylactic acid and a preparation method of a copolymer support. The preparation method comprises the following steps that 1), a biodegradable polymer original tube is preparedby biodegradable polymer materials; 2), the original tube is put into a tubular mold for heating, and high-pressure gas is injected into the original tube, so that the tube can be highly oriented in the radial direction, and the tube is axially stretched in the axial direction of the tube, so that the simultaneous orientation of the tube in the radial direction and the axial direction is realized;3), an expanded tube is placed at an annealing temperature for 5-30 minutes to anneal so as to obtain the formed tube, wherein the annealing temperature is higher than the glass transition temperature of the polymer materials and is lower than the melting temperature of the polymer materials; and 4) the formed tube is prepared into the polylactic acid and the copolymer support. According to the method, the immediate suppo |
Author | LUO QIYI CHEN SHUGUO MENG JUAN CHEN BAO'AI |
Author_xml | – fullname: CHEN SHUGUO – fullname: LUO QIYI – fullname: CHEN BAO'AI – fullname: MENG JUAN |
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DocumentTitleAlternate | 种聚乳酸及其共聚物支架的制备方法 |
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Snippet | The invention provides polylactic acid and a preparation method of a copolymer support. The preparation method comprises the following steps that 1), a... |
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SubjectTerms | AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES DISINFECTION, STERILISATION, OR DEODORISATION OF AIR HUMAN NECESSITIES HYGIENE INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MEDICAL OR VETERINARY SCIENCE METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL |
Title | Polylactic acid and preparation method of copolymer support |
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