The gel dynamics experiments showed that the gel formation law was similar with the other polymer systems, which wasrelated with dense surface under the soft coagulating condition and the thickening gel; the square of gel thickness was linear with coagulation time. The qualitative analysis of the surface puckers of fibers spun from wet spinning and dry-jet wet spinning was made. The positions where the die swell appeared were not the same and the die swell appeared at the air gap where the fiber would markedly been elongated and vary little in the coagulant, thus the surface of fiber spun from dry-jet wet spinning was more smooth. The radial component concentration gradient was responsible for the radial structure of PAN fiber spun from dry-jet wet spinning. The thicker surface with microvoid structure of

對濕紡和干濕紡進行比較表層溝槽的產(chǎn)生進行定性分析aa性欧美老妇人性交免费网站，原因在于孔口脹大區(qū)域出現(xiàn)在不同位置无码一级午夜久久福利精品，在干濕紡中，溶液的孔口脹大出現(xiàn)在空氣層99久久无码午夜体验区，并在該區(qū)完成大部分形變久久久精品一区二，進入凝固浴后形變很小，纖維表面較為光滑91精品在线啪；干濕紡PAN纖維徑向結(jié)構(gòu)存在差異黄网毛片aaa黄网毛片，這與絲條內(nèi)組分由于雙擴散進行導(dǎo)致徑向上存在濃度差異直接相關(guān)成人乱人伦精品影视大全在线观看视频；凝固強度較大的體系，可以獲得厚度較大且孔結(jié)構(gòu)尺寸較小的皮層免费在线看a片网址；含較少纏結(jié)的PAN原液在纖維成形后截面很圓整日韩成熟熟女精品自拍视频，但原液纏結(jié)濃度增大時成形后圓整度下降；PAN纖維成形是一個遠離平衡的過程91偷拍南宁老熟女合集，凝固作用緩和的體系可以使成形過程靠近平衡欧美一级片电影在线观看，可獲得更大尺寸的孔洞結(jié)構(gòu)；原液中少量的非溶劑添加劑顯著改變纖維徑向結(jié)構(gòu)九九色视频，可獲得孔洞尺寸更小和更為均一的徑向結(jié)構(gòu)色哟最新网站入口，這與徑向濃度差異的減小、分相時間的集中相關(guān)日韩美乳无码观看视频网站；PAN原液的成形纖維表面依賴于凝固強度日韩精品更新影院在线播放视频；由AFM對相近凝固條件下成形的PAN膜進下

FT-IR spectra shows that the polyaniline is present primarily in the emeraldine salt form, and the polymeric chains interact with inorganic framework, most likely via V=O…HN hydrogen bonding. XRD,TG and DSC indicate that the lamellar structure of the V_2O_5 is preserved, PAn chains eliminate water form the interlamellar region and are partially inserted between the layers, and exist with extended-chain conformation owing to the confined environment.Electrochemical investigation in the range of 1.8~3.8V vs.

紅外光譜表明復(fù)合物中PAn主要以導(dǎo)電聚苯胺鹽的形式存在，PAn鏈與V_2O_5晶格之間可能形成了V=O…HN氫鍵黄色网站免费刺激爽。X射線衍射在线a片大全、熱重和差示掃描量熱證實了PAn/V_2O_5復(fù)合物保持了較規(guī)整的層間排列結(jié)構(gòu)，PAn取代了V_2O_5干凝膠中的層間水而部分嵌入其片層間国产www视频在线观看，由于受空間的限制黄色网站在线观看网址，PAn分子鏈以比較伸展的鏈構(gòu)象存在。

The graft polymerization of acrylonitrile on Crosslinked polyvinyl alcohol microspheres CPVA microspheres was performed by using cerium ammonium sulfate as initiator, and grafted microspheres CPVA-g-PAN were prepared. Subsequently, the grafted PAN was converted into poly via amidoximation reaction with hydroxylamine hydrochloride as reagent, resulting in the functional microspheres CPVA-g-PAO. The chemical structure and physicochemistry characters were adequately characterized with infrared spectrum, scanning electron microscope and determining Zeta potential. The effects of main factors on the amidoximation transform reaction of the grafted PAN were researched with emphasis, and the adsorption property of the functional microspheres CPVA-g-PAO for some biomolecules was examined preliminarily with uric acid as a model biomolecule.

以硫酸鈰銨為引發(fā)劑gogo人体艺术写真视频，實施了丙烯腈在交聯(lián)聚乙烯醇微球表面的接枝聚合国内自拍骚视频，制備了接枝微球CPVA-g-PAN，然后以鹽酸羥胺為試劑亚洲无码免费，通過偕胺肟化轉(zhuǎn)變欧美成人大片在线，將接枝的PAN轉(zhuǎn)變?yōu)榫圪砂冯浚频昧私又τ芯圪砂冯康墓δ芪⑶駽PVA-g-PAO色婷婷五月天激情四射，采用紅外光譜法国产99视频精品免视看9、掃描電子顯微鏡及Zeta電位測定等法，對功能微球CPVA-g-PAO的化學(xué)結(jié)構(gòu)及物理化學(xué)特性進行了表征aⅴ天堂欧美日韩国产，重點考察了各主要因素對接枝PAN的偕胺肟化轉(zhuǎn)變反應(yīng)的影響日本巨乳在线，也以脲酸為模型分子，初探了功能微球CPVA-g-PAO對生物分子的吸附性能久久久久精品国产三级AL换脸。

At the same time, the fouling mechanism of membranes given in this thesis can give a reasonable explanation on the change of membrane performance. Our results show that the magnetization of membranes can effectively improve the anti-fouling ability of the PAN- Fe_3O_4 membrane. The obtained result may give insight to the development of new membranes with a good anti-fouling performance in the filtration of blood solution. No chemical bond was found between PAN and Fe_3O_4 in the membrane at room temperature. The addition of Fe_3O_4 can improve the temperatures of dehydrogenated reaction and decomposition of PAN but dot change the glassy transition temperature. The resistance against acid is stronger than the resistance to base for a PAN- Fe_3O_4 membrane.

結(jié)果表明在PAN- Fe_3O_4超濾膜制備過程中使用外加磁場作用能有效提高膜的耐污染能力自拍偷拍一区二区，這一結(jié)果為開發(fā)適用于血液處理的耐污染超濾膜提供了一種新途徑；在PAN- Fe_3O_4超濾膜中午夜福利导航，四氧化三鐵與PAN在室溫下沒有形成化學(xué)鍵天堂网wwwww，也不存在官能團之間的相互作用；添加Fe_3O_4對膜的玻璃化溫度沒有影響，但能提高PAN環(huán)化脫氫反應(yīng)的溫度和分解溫度午夜欧美黄色；PAN- Fe_3O_4超濾膜的耐酸性強于耐堿性国产在线观看小视频，在pH值為10以上的溶液中由于水解作用而溶解，使得膜失去使用價值日本黄色网视频站，膜的耐酸性與酸的種類国产黄色孕妇网站、濃度和氧化性有關(guān)。

As for PAn-based composites, the influences of the kinds of oxidant, the amount of hydrochloric acid and barbon black on conductivity were investigated, Li/PAn button-type secondary batteries were assembled with PAn-based composites which were synthesized by chemical oxidative polymerization and used as cathode, the influences of the kinds of oxidant, synthesized technics, conducting carbon black added mode and PAn/metal oxide composites used as cathode on the properties of these batteries were studied.

對于聚苯胺基復(fù)合材料體系免费的色色的视频，研究了氧化劑種類欧美日本高清在线不卡视频、鹽酸用量、炭黑用量對復(fù)合材料電導(dǎo)率的影響国产精品视频一区二区三区四区；以化學(xué)法制備的聚苯胺基復(fù)合材料作正極組裝了Li/PAn二次扣式電池黄片AAAAA超黄片，探討了氧化劑種類、聚合工藝色色色五月网站、導(dǎo)電劑的加入方式以及PAn與金屬氧化物復(fù)合后作電池正極的性能日老女人视频。

The main factors that can affect the strength of base PAN fiber and how its hydrolysis reaction happened in alkaline conditions were discussed.

應(yīng)用紅外光譜儀、元素分析儀在线国产视频一区二区三区、比表面分析儀等對基體聚丙烯腈纖維及其部分水解PAN-COOH型離子交換纖維進行了表征亚洲,无码,乱伦，討論了影響基體PAN纖維強度的主要因素和堿性條件下的水解反應(yīng)獲得了干態(tài)水解PAN纖維的性能指標(biāo)：強度8.3 cN/dtex，交換容量0.26 mmol/g 欧美粗暴性交， BET比表面積為0.58平方公尺/g的PAN-COOH型離子交換纖維亚洲加勒比黑人一区二区，并較為詳細地討論了該纖維氰基轉(zhuǎn)化成羧基的比率，羧基在纖維表面的排列及最大水解量成年女人vr免费视频播放。

Pan out, like the verb pan itself, comes from the noun pan in the sense a shallow circular metal vessel used in washing gold from gravel.

Pan out 象動詞 pan 本身一樣來源于名詞 pan 亚洲欧美理论一二区中文字幕，意思是&一個淺而且圓的金屬器皿，用來從礦砂中淘洗金子&小草A片。

Pan out,like the verb pan itself, comes from the noun pan in the sense 揳 shallow circular metal vessel used in washing gold from gravel.?

Pan out象動詞 pan本身一樣來源于名詞 pan中文字幕在线www，意思是&一個淺而且圓的金屬器皿，用來從礦砂中淘洗金子&XⅩXWWW。

Dynamic laser light-scattering experiment indicated that PEO-PAn and PAn-PEO-PAn aggregated in DMF, and their aggregation radiuses were about 40-60nm.

所合成的嵌段共聚物PAn-PEO高清亚洲福利网站你懂得，PAn-PEO-PAn通過動態(tài)激光散射測量表明：在選擇性溶劑DMF中形成了膠束，它們的膠束半徑在40-60nm之間亚洲自拍第一区。

Pan'world started in Scotland in 1899, the founder, the Colone Malcolm De Daphta family, was specialized in breeding and developing terriers. Now Pan'world has become the breeding center of all breeds in the UK and Europe. While developing the breeds, Pan'world has also developed a series of services and products such as luxlrious products which takes up 9% market share in European, pet food and chain stores.

orld在1899年起源于風(fēng)景如畫的蘇格蘭高地欧美一级高清电影免费，其創(chuàng)始人Colone Malcolm De Daphta家族最初以培育及研發(fā)新品梗類犬為主，發(fā)展至今已經(jīng)成為英國乃至全歐洲的全犬種繁育中心日本三级在线专区高清，Pan'sWorld在其發(fā)展的過程中在线观看中文字幕小说区，努力開拓寵物產(chǎn)業(yè)中的多項服務(wù)及產(chǎn)品，如：開發(fā)了以PANSWORLD為品牌的名貴寵物用品96sao国产成视频永久免费，占領(lǐng)了歐洲9%的市場份額国产精华Av在线导航网站，還有各種寵物食物及寵物連鎖店等欧美第一页激情视频。2006年底Pan'sWorld來到中國亚洲日韩国产黄色片，擁有了一個中國名字www.最新黄色视频.com？？