交酯 的英文怎麼說

中文拼音 [jiāozhǐ]
交酯 英文
cyclic diester
  • 交 : Ⅰ動詞1 （把事物轉移給有關方面） hand over; give up; deliver 2 （到某一時辰或季節） reach （a cert...
  • 酯 : 名詞[化學] （有機化合物的一類） ester
  1. Pgla, one biodegradable material, is used to braid the conduits, which integrates the merits of its two aggregate ingredients. it is easy to adjust degrading rate to match the regeneration period of the nerve by changing the proportion of the two ingredients. the conduits are fabricated enlacing 2. 2 millimeter stainless steel on the braiding machine with 16 spindles using 2700 tex yarns. four conduits with different structures are braided : common braided structure, braided structure using braided ply yarn, braided structure with inserted reinforcing yarn and adding bridge - yarn structure, the last two conduits are new attempts to look for good shape - keeping structure, being able to lead the nerve to regenerate effectively

    本課題選用可生物降解材料聚乙丙交酯（ pgla ）為原料，它兼具兩種聚合成分的優點，可以通過調節兩者聚合的配比來調節它的降解周期，使與神經再生的周期相吻合。導管的製作是在16錠編織機上採用2700tex紗線進行帶芯編織，芯子為直徑2 . 2mm的不銹鋼絲。共製作四種結構神經導管，分別為普通結構神經導管、編織線結構神經導管、加筋結構神經導管和加芯結構神經導管。
  2. This article mainly focus on the selection and amelioration of catalyst. we think the mechanism of depolymerization reaction of the poly lactic acid ( oligomer ) is a intramolecular ester exchange reaction

    本文從改善合成反應的催化條件入手，通過對丙交酯合成反應的機理分析，認為整個反應是一個酯化和分子內的酯交換的反應過程。
  3. Afterwards, the remnant lactic acid in lactide was measured by non - aqueous titration with sodium methoxide and the remnant water was surveyed by karl - fisher method. the melting point was investigated by thiele tube and the characteristics of lactide were analyzed by ir, uv spectrum, tg and dsc respectively

    然後，用甲醇鈉非水滴定法測定丙交酯中殘存乳酸，卡爾-費休法測定丙交酯中殘存水的含量，用提勒管測定精製丙交酯熔點，用紅外吸收光譜、紫外光譜、差熱分析對合成的丙交酯以及回收的丙交酯進行表徵。
  4. The synthesis and thermal stability of poly

    對聚丙交酯的合成和熱穩定性進行了研究。
  5. The main work and the conclusion of the article are : ( 1 ) give a suggestion on the reaction mechanism and the principle of catalyst selection. ( 2 ) by comparison of the catalyst activity of solid superacid with the zinc oxide, stannous chlorde and tin ( ii ) octate in the synthesis reaction. we find that although its activity is lower than tin ( ii ) octate, obviously higher than that of traditional zinc oxide and stannous chlorde. from the point of preparation cost, we select solid superacid as catalyst

    但從催化劑的制備成本和工藝的角度選擇，固體超強酸具有明顯的優勢； （ 3 ）制備一系列單組元和雙組元硫酸促進氧化物固體超強酸，並用於丙交酯的合成反應，篩選具有最佳活性的固體超強酸催化劑： （ 4 ）使用so2 - 4 / zno - sno2 （ 2 ： 1 ） la3 +固體超強酸作催化劑，反應脫水時間1
  6. The present study on productive process of lactide

    丙交酯制備工藝的研究現狀
  7. On lactide synthesis method and condition of reaction

    丙交酯制備方法研究進展與反應條件分析
  8. Synthesis and characterization of d, l - lactide

    丙交酯的合成及表徵
  9. Studies on the synthesis and thermal stability of poly l - lactide

    聚l -丙交酯的制備及其熱穩定性能的研究
  10. Mechanism of ferric alkoxides - initiated polymerization of lactide

    醇鐵化合物引發丙交酯開環聚合機理的研究
  11. Poly l - lactide resins and fabricated forms for surgical implants - in vitro degradation testing

    外科植入物用聚l -丙交酯樹脂及製品.體外降解試驗
  12. The result indicated the purity of lactide which had been recrystallized thrice can reach 99. 5 %

    結果表明重結晶三次后丙交酯純度在99 . 5以上。
  13. Along with different hydrolytic degrees, the content of hydrolytic acid was determined by non - aqueous titration, the content of water remained was determined by karl ? fischer titration

    結果表明，丙交酯水解液中平均含水量為26 . 98 % ，含酸量為69 . 90 % ，水解徹底，實驗精密度及準確度均達到要求。
  14. The study of spinning technology for pga fiber

    聚乙交酯纖維紡絲工藝研究
  15. Secondly, based on the ideal characters of artificial trachea, three types of tubular fabric were designed as the stent : woven tubular fabric ; plating knitted tubular fabric and completely degradable knitted tubular fabric which is made of pgla only

    其次根據人工氣管的理想性能特徵設計了三種用作支架的管道織物：機織組織管道織物、針織添紗組織管道織物和僅採用聚乙丙交酯編織的可完全降解的針織緯平針管道織物。
  16. Lactide were investigated. the key factors affecting the polymer intrinsic viscosity were found to be monomer recrystallization times, stannous octoate concentration and polymerization time. the thermal stabilizing agent did not significantly affect the polymer molecular weight. the polymer with a viscosity average molecular weight beyond 200000 was fairly reproducible by optimizing the polymerization conditions. it was found that poly

    單體重結晶次數辛酸亞錫濃度聚合時間等條件均是影響聚合物特性粘數的重要因素。熱穩定劑對聚丙交酯的分子量幾乎沒有影響。優化聚合條件可以獲得粘均分子量大於200000的聚丙交酯材料，聚合結果具有良好的重復性。
  17. Implants for surgery - copolymers and blends based on polylactide - in vitro degradation testing

    外科植入物.聚交酯共聚物和共混物.體外降解試驗
  18. Studies on the synthesis and thermal stability of poly

    -丙交酯的制備及其熱穩定性能的研究
  19. Influence of the dynamic and static degradable systems on poly - dl - lactide - co - glycolide degradable products in vitro

    動靜態浸泡體系對聚乙交酯丙交酯體外降解產物的影響
  20. ( 5 ) the article also investigate the recrystallization condition of crude lactide and point out that it also an important factor have influence on the purification production ratio. ( 6 ) give the kinetics equation of depolymerization reaction. by determination the degree of polymerization ( dp ) of the reaction system, we can get the kinetics data of the reaction

    本文建議使用乙酸乙酯和異丙醇混合溶劑（ 6 ： 4 ）對丙交酯粗產物進行重結晶； （ 6 ）提出解聚反應的動力學方程，認為它是一個可近似處理為一級反應的連續反應，並可通過測定體系的平均聚合度的方法來得到包括活化能在內的反應動力學數據。
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