phbv 中文意思是什麼

phbv 解釋
戊酸酯共聚物
  1. Our products include various types of biodegradable shopping bags, garbage bags, t - shirt vest bags and dead body bags, etc made from pla enbiomat phb mater - bi pha phbv etc

    等全生物分解材料做成的各種類包裝袋購物袋垃圾袋背心袋掛衣袋堆肥袋和包屍袋等。
  2. On the surface of phbv spherulite, some concentric ring like patterns will occur. based on the procedure of the formation of ring - like patterns, the possible mechanism is given

    在球晶的表面出現有同心圓環狀條紋，經實驗驗證為表面的不平整所導致，形成機理主要可能是結晶過程中的體積收縮。
  3. A reasonable mechanism of the concentric ring like patterns on the surface of phbv spherulite was given first. the segregation of hv content between cystal and amorphous parts was observed and the phenomena caused were discussed

    首次對phbv球晶表面觀察到的同心圓環條紋的成因作了合理解釋，揭開了這一現象形成的本質。
  4. The sgr ( spherulite growth rate ) of phbv is related to crystallization temperature. with the increase of temperature, sgr increase first then decrease. some sample ' s sgr will increase again at high temperature area

    Phbv的球晶生長速度與時間無關，隨溫度的升高有先上升後下降的趨勢，部分樣品在最後球晶速度會再次上升。
  5. And the spherulite growth rate of phbv is studied and the factors, which influence the growth rate and the formula of spherulite growth rate, were discussed

    並通過對phbv球晶生長速率的測定，對結。晶生長的速度方程及影響因素做出修正。
  6. This change makes the processing difficult. it is found that phbv ( poly ( hydroxybutyrate - co - valerate ) will still thermal degrade at the temperature much more lower than the acute thermal degradation temperature

    通過研究發現， phbv （聚羥基丁酸-羥基戊酸酯）在其發生劇烈快速熱降解的溫度以下仍然有熱降解行為的發生。
  7. Phbv will degrade at the processing temperature, which is much lower than its acute thermal degradation temperature. as the material for chemical fiber, phbv shows some special properties. when it was spun, the as - spun fiber was elastic and finally it would turn to be rigid

    作為化學纖維的原料，此類材料的初生纖維在固體狀態表現出的由彈性行為為主向塑性行為為主的轉變直至最後表現為剛性體特徵，直接影響著此類纖維的成形加工過程，成為其進一步發展的瓶頸障礙。
  8. But it is mainly dependant on the physical parameters such as volume shrinkage. and when phbv crystallized, the hv content will be segregated, it will be accelerated when crystallization temperature is increased

    在結晶過程中， phbv二元共晶中hv （羥基戊酸）組分會受到排斥，結晶溫度的升高會導致hv組分分凝現象的加劇。
  9. It is the first time to get phbv fiber by melt spinning in china. and the changes of fiber crystallization structure and orientation structure under force were studied

    並在國內首次通過熔融法制備了phbv纖維，首次論證了纖維結晶結構的變化及其在外力作用下取向結構的變化。
  10. In some bacteria the pha in the dry cell can be up to 70 % wt by fermentation, but the cost is high. this class includes phb ( poly ( 3 - hydroxybutyrate ) ) and phbv ( poly ( 3 - hydroxybutyrate - co - 3 - hydroxyvalerate ) ). these polymers present the advantages of biodegradability and biocompatibility over other thermoplastics with useful mechanical properties

    Pha （聚羥基脂肪酸酯）是一類從菌體中分離出來的新型生物高分子材料，由於其直接從生物體中提取，因而具有良好的生物相容性、生物可吸收性和生物可降解性能，近年來引起可降解高分子材料研究人員的極大興趣。
  11. The synthesis of poly ( - hydroxybutyrate - co - - hydroxyvalerate ) by the strain g - iiiy from different precusor was studied. it was found that the strain g - iiiy could accumulate phbv with sucrose as carbon source and propionic acid or valeric acid as precursor. in 2l self - controlled fermentor, the dry cell weight, phbv concentration and phbv content reached 35. 8g ? l - 1, 22. 6g ? l - 1 and 38. 4 % respectively in the case of fermentation for 42 hours and the propionic acid as precursor

    研究了添加不同前體物， g - y菌株生產聚-羥基丁酸和聚-羥基戊酸共聚物（ phbv ）的發酵條件，結果表明，此菌株能以丙酸或戊酸為前體，在蔗糖為碳源的條件下合成phbv共聚物；在2l發酵罐中，以丙酸為前體，發酵16小時開始流加丙酸，根據發酵液ph值變化控制丙酸流加量，發酵42小時，細胞干重、 phbv產量和含量分別達到35 . 8g / l ， 22 . 6g / l ， 63 . 13 。
  12. The apparent viscosity of phbv will decrease quickly while the shear rate increase

    Phbv的表觀粘度隨剪切速率的上升下降很快。
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