鏈形聚合物 的英文怎麼說
中文拼音 [liànxíngjùgěwù]
鏈形聚合物
英文
chain polymer- 鏈 : Ⅰ名詞1. (鏈子) chain Ⅱ動詞(用鏈栓住) chain; enchain Ⅲ量詞(計量海洋上距離的長度單位) cable length
- 聚 : 動詞(聚集; 聚積) assemble; gather; get together
- 合 : 合量詞(容量單位) ge, a unit of dry measure for grain (=1 decilitre)
- 物 : 名詞1 (東西) thing; matter; object 2 (指自己以外的人或與己相對的環境) other people; the outsi...
- 聚合物 : [化學] polymer; polymerizate; polymeric compound; polymeric substance; polymeride; polymerized su...
- 聚合 : 1 (聚集到一起) get together2 [化學] (單體結合成高分子化合物) polymerization; polymerize 3 [生...
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First to heat pvc and sulfur together at a certain temperature, where the melted sulfur being a fine dehydrogenating agent, captured hydrogen from pvc bone chain and led to an electrially conductive polymer with conjugated electrons
採用聚氯乙烯與單質硫在一定的溫度下加熱處理,在熔融狀態下的單質硫作為良好的脫氫氧化試劑,使聚氯乙烯主鏈脫氫形成具有共軛電子的導電聚合物。Fos contain mixture of gf2, gf3 and gf4 sugars ( where g = glucose molecule and f = fructose molecule ) and a dp ( “ degree of polymerization ” ) of 3 - 5 ( “ neosugar ” ), are not naturally - occurring but are enzymatically synthetized from sucrose by action of an enzyme from the fungus aspergillus niger
詳細說明:是以蔗糖做底物,採用呋喃果糖苷酶轉果糖基作用,在蔗糖分子上以( 1 2 )糖苷鍵上與1 - 3個果糖分子結合,形成的蔗果三糖( gf2 ) 、蔗果四糖( gf3 ) 、蔗果五糖( gf4 )屬于果糖和蔗糖構成的直鏈雜低聚糖,在形成的產物中還有果糖、葡萄糖和未反應完全的底物蔗糖,採用色譜法除去單糖和雙糖制得高純度的低聚果糖。Polymers are most commonly formed by two main types of growth reaction traditionally referred to us condensation (step reaction) and addition (chain reaction) processes.
形成聚合物的最普通方式是靠兩種主要的增長反應,習慣上分別稱做縮合(逐步反應)過程和加成(鏈式反應)過程。The urea - formaldehyde ( uf ) polymer / sio2 composite microspheres were prepared by polymerization - induced colloid aggregation ( pica ) method. the formation mechanism of composite microspheres is attributed to the fact that that urea and formaldehyde firstly undergo acid - catalyzed polymerization to form oligomers, and then the sol particles are adsorbed on the chain of oligomers by wan der walls force and hydrogen bonding. when the oligomers reach the critical chain length, they separate from solution due to phase separation
對復合微球形成機理的研究表明,尿素和甲醛在酸性條件下自身聚合可以形成高分子微球,在sio _ 2酸性溶膠中發生聚和反應時,隨著反應的進行,齊聚物不斷生成, sio _ 2膠體顆粒逐漸吸附在齊聚物分子鏈上,當聚合物鏈達到沉澱臨界鏈長時,由於相分離作用,從前驅物溶液中析出,同時sio _ 2膠體顆粒均勻的分佈在脲醛聚合物網路中,隨之沉澱出來,形成脲醛sio _ 2復合微球。In e coli, dna polymerases are key enzymes involved in two distinguished pathways contributing to untargeted mutagenesis. replication of dna by pol v ( umuc ), in the presence of umud1, reca and single strand binding protein ( ssb ), is highly mutagenic and exhibits a predominant mutation pattern of base transversion. another error prone polymerase involved in untargeted mutagenesis is pol iv, encoded by dinb gene
在umud ' , reca和單鏈結合蛋白ssb的協助下, polv ( umuc )能在單鏈模板上催化dna合成並產生高頻率的以堿基顛換為主要形式的突變;另一個與非定標性突變有關的易誤dna聚合酶是pol ,為dinb基因的編碼產物。Too frequently, however, we think of these materials solely in terms of their electronic or optical properties, preparation and electrochemical polymerization process. we need to remind ourselves that other, nonelectronic properties of these materials can be equally important. for example, certain mechanical properties and fatigue failure mechanism related to their applications
不過,到目前為止,人們主要關心的是材料的物理和化學特性、制備方法、電化學反應控制、聚合鏈上多種相互作用的分子形成過程和分子聚合特性等,而對與實際應用密切相關的材料力學特性和疲勞損傷機理等力學問題的研究則相當匱乏。In the low oxidation states, platinum group metals have a tendency of aggregating to form clusters containing polynuclear metal chain
在低價狀態下,鉑系金屬可自聚合形成一類含有多個金屬原子的線性金屬鏈式簇合物。It is the especial congregate structure of polymer matrix that is necessary for the forming of three - dimensional interpenetrate network between the polymer and copper. the mma unites lead to the advantage of improving fiexibity of the film, destroying the formal arrangement of macromolecule chain in polymer and decreasing the degree of crystallization. the ita unites help the solvolyzed copper ion transfer in the film and benefite the forming and establishment of the networks of polymer matrix
聚合物基體特殊的聚集態結構是互穿立體網路形成的必要條件,皿m的加入有利於破壞丙烯睹大分子鏈的規整性,使結晶度降低,提高聚合物的柔韌性,含親水基團的單體( ita 、 as )存在有利於降低離子遷移的界面能,提供溶劑化銅離子遷移的途徑以及聚合物基體網路結構的形成和穩定。This was due to three reasons : ( 1 ) baso4 particles were rigid inorganic particles, which could hinder the retraction of polymer molecules and decreased the elasticity. ( 2 ) a bad compatibility between baso4 and tpu, small interface adhesive force and the phase interface ready to separate. ( 3 ) during high content of baso4, the tenacity of filament mainly depended on tpu, so that the strength decreased with the content of tpu in filament down
這是因為: baso _ 4屬于剛性粒子,阻礙tpu大分子鏈的回縮,降低了纖維的彈性; baso _ 4與tpu相容性極差,共混時容易形成相界面,界面結合力小,受外力作用時相與相間容易發生分離,使纖維的力學性能下降; baso _ 4在高含量下,纖維強度主要由聚合物的力學性能決定,隨著baso4含量的增加, tpu所佔比例下降,從而在宏觀上表現出纖維的力學性能下降。分享友人