vacuum期刊是sci吗

发布时间：2023-12-09 08:37:33

vacuum期刊是sci吗

这些都是检索系统，一个收录很多论文的数据库。 SCI主要偏重理论性研究。 SSCI是社会科学期刊数据库。 EI偏工程应用。 CSCD和核心期刊都是中国的数据库。 ISTP是会议论文数据库，以上都是期刊论文。

SCI 期刊一般来讲就是国际核心期刊的一种而我们常说的核心期刊就是指中国过内的核心期刊（北核，南核，科技核，CSCD）

SCI是一个索引，其下分很多学科门类，不同学科有各自的刊物，具可分类查询，每个刊物都有其侧重。

vacuum是sci几区

这是中科院划分的，你也可以看影响因子的大小来区分，一般0-1分，1-2分大部分都在四区，三区的得2分以上了，以此类推，你大概就知道在几区了

区期刊不论是jcr分区的一区，还是中科院的一区，只要是一区期刊，都是国际上知名的学术期刊，这部分期刊发表难度是非常大的，也不是任何人都可以发表的，对于普通作者来说，是非常困难的，且不说文章难写，对作者身份职务可能都会有一定门槛，一区期刊是不适合不同作者发表的，一般能发表一区的都是一些专家学者、知名大学教授、或者一些在本专业内有一定影响力的科研工作者。　　　　二区期刊仅次于一区期刊，二区sci期刊国内作者发表的就相对多一些了，目前国内一些标准中明确要求发表二区及以上期刊，所以二区是很多国内作者的首选，二区期刊发表难度略小，但也要看具体的学科和具体的期刊，一般的规律是二区期刊较一区期刊容易一些。　　　　三区四区期刊的发表难度就会更低一些，但三区四区期刊在国内有些许争议，就是因为上述我们提到的硬性要求，有些单位和高校是不认可二区以下的刊物的，因此，很多作者会认为三区四区刊物不值得发表，没有发表价值，其实对于大多数普通作者来说，只要能发表sci论文就已经实属不易了，国内也有很多单位只要是sci论文就认可，对分区，没有过多要求，这种情况下三区四区期刊也是可以发表的。

w 给你一份范文

中科院自己划的。先是按学科，再按影响因子排列划分。反正不怎么好，水分略大。

Vacuum期刊

下面都是材料学的刊物,很多哟。序号杂志全名中译名1 NATURE 自然2 SCIENCE 科学3 SURFACE SCIENCE REPORTS 表面科学报告4 PROGRESS IN MATERIALS SCIENCE 材料科学进展5 PROGRESS IN SURFACE SCIENCE 表面科学进展6 PHYSICAL REVIEW LETTERS 物理评论快报7 MATERIALS SCIENCE & ENGINEERING R-REPORTS 材料科学与工程报告8 ADVANCES IN POLYMER SCIENCE 聚合物科学发展9 ADVANCED MATERIALS 先进材料10 ANNUAL REVIEW OF MATERIALS SCIENCE 材料科学年度评论11 APPLIED PHYSICS LETTERS 应用物理快报12 PROGRESS IN POLYMER SCIENCE 聚合物科学进展13 CHEMISTRY OF MATERIALS 材料化学14 PHYSICAL REVIEW B 物理评论B15 ADVANCES IN CHEMICAL PHYSICS 物理化学发展16 JOURNAL OF MATERIALS CHEMISTRY 材料化学杂志17 ACTA MATERIALIA 材料学报18 MRS BULLETIN 材料研究学会（美国）公告19 BIOMATERIALS 生物材料20 CARBON 碳21 SURFACE SCIENCE 表面科学22 JOURNAL OF APPLIED PHYSICS 应用物理杂志23 CHEMICAL VAPOR DEPOSITION 化学气相沉积24 JOURNAL OF BIOMEDICAL MATERIALS RESEARCH 生物医学材料研究25 IEEE JOURNAL OF QUANTUM ELECTRONICS IEEE量子电子学杂志26 CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE 固态和材料科学的动态27 DIAMOND AND RELATED MATERIALS 金刚石及相关材料28 ULTRAMICROSCOPY 超显微术29 EUROPEAN PHYSICAL JOURNAL B 欧洲物理杂志 B30 JOURNAL OF THE AMERICAN CERAMIC SOCIETY 美国陶瓷学会杂志31 APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING 应用物理A－材料科学和进展32 NANOTECHNOLOGY 纳米技术33 JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B 真空科学与技术杂志B34 JOURNAL OF MATERIALS RESEARCH 材料研究杂志35 PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES 哲学杂志A凝聚态物质结构缺陷和机械性能物理36 INTERNATIONAL JOURNAL OF NON-EQUILIBRIUM PROCESSING 非平衡加工技术国际杂志37 JOURNAL OF NEW MATERIALS FOR ELECTROCHEMICAL SYSTEMS 电化学系统新材料杂志38 JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS 真空科学与技术A真空表面和薄膜39 DENTAL MATERIALS 牙齿材料40 JOURNAL OF ELECTRONIC MATERIALS 电子材料杂志41 JOURNAL OF NUCLEAR MATERIALS 核材料杂志42 INTERNATIONAL MATERIALS REVIEWS 国际材料评论43 JOURNAL OF NON-CRYSTALLINE SOLIDS 非晶固体杂志44 JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 磁学与磁性材料杂志45 OPTICAL MATERIALS 光学材料46 IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY IEEE应用超导性会刊47 METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIAL 冶金与材料会刊A——物理冶金和材料48 THIN SOLID FILMS 固体薄膜49 JOURNAL OF PHYSICS D-APPLIED PHYSICS 物理杂志D——应用物理50 INTERMETALLICS 金属间化合物51 PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS 哲学杂志B－凝聚态物质统计力学52 SURFACE & COATINGS TECHNOLOGY 表面与涂层技术53 JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 生物材料科学—聚合物版54 MATERIALS RESEARCH INNOVATIONS 材料研究创新55 BIOMETALS 生物金属56 INTERNATIONAL JOURNAL OF PLASTICITY 塑性国际杂志57 SMART MATERIALS & STRUCTURES 智能材料与结构58 ADVANCES IN IMAGING AND ELECTRON PHYSICS 成像和电子物理发展59 SYNTHETIC METALS 合成金属60 JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE 材料科学杂志—医用材料61 SCRIPTA MATERIALIA 材料快报62 COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING 复合材料 A应用科学与制备63 MODERN PHYSICS LETTERS A 现代物理快报A64 SEMICONDUCTOR SCIENCE AND TECHNOLOGY 半导体科学与技术65 JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 欧洲陶瓷学会杂志66 APPLIED SURFACE SCIENCE 应用表面科学67 MATERIALS TRANSACTIONS JIM 日本金属学会材料会刊68 PHYSICA STATUS SOLIDI A-APPLIED RESEARCH 固态物理A——应用研究69 MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECH 材料科学与工程B—先进技术用固体材料70 CORROSION SCIENCE 腐蚀科学71 JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 固体物理与化学杂志72 JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY 粘着科学与技术杂志73 INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS 耐火金属和硬质材料国际杂志74 SURFACE AND INTERFACE ANALYSIS 表面与界面分析75 INTERNATIONAL JOURNAL OF INORGANIC MATERIALS 无机材料国际杂志76 SURFACE REVIEW AND LETTERS 表面评论与快报77 MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROST 材料科学和工程A—结构材料的性能、组织与加工78 NANOSTRUCTURED MATERIALS 纳米结构材料79 IEEE TRANSACTIONS ON ADVANCED PACKAGING IEEE高级封装会刊80 INTERNATIONAL JOURNAL OF FATIGUE 疲劳国际杂志81 JOURNAL OF ALLOYS AND COMPOUNDS 合金和化合物杂志82 JOURNAL OF NONDESTRUCTIVE EVALUATION 无损检测杂志83 MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS 材料科学与工程C—仿生与超分子系统84 JOURNAL OF ELECTROCERAMICS 电子陶瓷杂志85 ADVANCED ENGINEERING MATERIALS 先进工程材料86 IEEE TRANSACTIONS ON MAGNETICS IEEE磁学会刊87 PHYSICA STATUS SOLIDI B-BASIC RESEARCH 固态物理B—基础研究88 JOURNAL OF THERMAL SPRAY TECHNOLOGY 热喷涂技术杂志89 MECHANICS OF COHESIVE-FRICTIONAL MATERIALS 粘着磨损材料力学90 ATOMIZATION AND SPRAYS 雾化和喷涂91 COMPOSITES SCIENCE AND TECHNOLOGY 复合材料科学与技术92 NEW DIAMOND AND FRONTIER CARBON TECHNOLOGY 新型金刚石和前沿碳技术93 MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING 材料科学与工程中的建模与模拟94 INTERNATIONAL JOURNAL OF THERMOPHYSICS 热物理学国际杂志95 JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY 溶胶凝胶科学与技术杂志96 HIGH PERFORMANCE POLYMERS 高性能聚合物97 MATERIALS CHEMISTRY AND PHYSICS 材料化学与物理98 METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS 冶金和材料会刊B—制备冶金和材料制备科学99 COMPOSITES PART B-ENGINEERING 复合材料B工程100 CEMENT AND CONCRETE RESEARCH 水泥与混凝土研究101 JOURNAL OF COMPOSITE MATERIALS 复合材料杂志102 JOURNAL OF MATERIALS SCIENCE 材料科学杂志103 JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME 工程材料与技术杂志—美国机械工程师学会会刊104 MATERIALS RESEARCH BULLETIN 材料研究公告105 JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY 矿物、金属和材料学会杂志106 JOURNAL OF BIOMATERIALS APPLICATIONS 生物材料应用杂志107 FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES 工程材料与结构的疲劳与断裂108 JOURNAL OF ADHESION 粘着杂志109 COMPUTATIONAL MATERIALS SCIENCE 计算材料科学110 IEEE TRANSACTIONS ON SEMICONDUCTOR MANUFACTURING IEEE半导体制造会刊111 MECHANICS OF COMPOSITE MATERIALS AND STRUCTURES 复合材料和结构力学112 PHASE TRANSITIONS 相变113 MATERIALS LETTERS 材料快报114 EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS 欧洲物理杂志—应用物理115 PHYSICA B 物理B116 ADVANCED COMPOSITES LETTERS 先进复合材料快报117 POLYMER COMPOSITES 聚合物复合材料118 CORROSION 腐蚀119 PHYSICS AND CHEMISTRY OF GLASSES 玻璃物理与化学120 JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 材料科学杂志—电子材料121 COMPOSITE INTERFACES 复合材料界面122 AMERICAN CERAMIC SOCIETY BULLETIN 美国陶瓷学会公告123 APPLIED COMPOSITE MATERIALS 应用复合材料124 RESEARCH IN NONDESTRUCTIVE EVALUATION 无损检测研究125 PROGRESS IN CRYSTAL GROWTH AND CHARACTERIZATION OF MATERIALS 晶体生长和材料表征进展126 JOURNAL OF COMPUTER-AIDED MATERIALS DESIGN 计算机辅助材料设计杂志127 CERAMICS INTERNATIONAL 国际陶瓷128 POLYMER TESTING 聚合物测试129 ADVANCED PERFORMANCE MATERIALS 先进性能材料 130 SEMICONDUCTORS 半导体131 URNAL OF BIOACTIVE AND COMPATIBLE POLYMERSJO 生物活性与兼容性聚合物杂志132 HIGH TEMPERATURE MATERIALS AND PROCESSES 高温材料和加工133 ADVANCES IN POLYMER TECHNOLOGY 聚合物技术发展134 COMPOSITE STRUCTURES 复合材料结构135 JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 日本陶瓷学会杂志136 BIO-MEDICAL MATERIALS AND ENGINEERING 生物医用材料与工程137 INTERNATIONAL JOURNAL OF MODERN PHYSICS B 现代物理国际杂志B138 INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS 理论物理国际杂志139 INTEGRATED FERROELECTRICS 集成铁电材料140 MAGAZINE OF CONCRETE RESEARCH 混凝土研究杂志141 ACI MATERIALS JOURNAL 美国混凝土学会材料杂志142 JOURNAL OF MATERIALS SCIENCE LETTERS 材料科学杂志快报143 FERROELECTRICS 铁电材料144 BULLETIN OF MATERIALS SCIENCE 材料科学公告145 MATERIALS SCIENCE FORUM 材料科学论坛146 JSME INTERNATIONAL JOURNAL SERIES A-SOLID MECHANICS AND MATERIAL ENGINEERIN 日本机械工程学会国际杂志系列A－固体力学与材料工程147 MATERIALS CHARACTERIZATION 材料表征148 SYNTHESIS AND REACTIVITY IN INORGANIC AND METAL-ORGANIC CHEMISTRY 无机物及金属—有机物化学的合成和反应149 MATERIALS AT HIGH TEMPERATURES 高温材料150 HIGH TEMPERATURES-HIGH PRESSURES 高温—高压151 JOURNAL OF COMPOSITES TECHNOLOGY & RESEARCH 复合材料技术与研究杂志152 ACI STRUCTURAL JOURNAL 美国混凝土学会结构杂志153 MATERIALS & DESIGN 材料与设计154 MATERIALS AND STRUCTURES 材料与结构155 MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING 半导体加工的材料科学156 BRITISH CERAMIC TRANSACTIONS 英国陶瓷会刊157 MECHANICS OF COMPOSITE MATERIALS 复合材料力学158 JOURNAL OF COATINGS TECHNOLOGY 涂层技术杂志159 JOURNAL OF REINFORCED PLASTICS AND COMPOSITES 增强塑料和复合材料杂志160 MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION 材料与腐蚀161 SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES 中国科学E技术科学162 CEMENT & CONCRETE COMPOSITES 水泥与混凝土复合材料163 MATERIALS EVALUATION 材料评价164 POLYMERS & POLYMER COMPOSITES 聚合物与聚合物复合材料165 JOURNAL OF MATERIALS SYNTHESIS AND PROCESSING 料合成与加工杂志166 ADVANCED COMPOSITE MATERIALS 先进复合材料167 INTERNATIONAL JOURNAL OF MATERIALS & PRODUCT TECHNOLOGY 材料与生产技术国际杂志168 JOURNAL OF MATERIALS IN CIVIL ENGINEERING 土木工程材料杂志169 HIGH TEMPERATURE MATERIAL PROCESSES 高温材料加工170 CONSTRUCTION AND BUILDING MATERIALS 结构与建筑材料171 HIGH TEMPERATURE 高温172 RARE METAL MATERIALS AND ENGINEERING 稀有金属材料与工程173 INORGANIC MATERIALS 无机材料174 SCIENCE AND TECHNOLOGY OF WELDING AND JOINING 焊接科学与技术175 MATERIALS AND MANUFACTURING PROCESSES 材料与制造工艺176 FERROELECTRICS LETTERS SECTION 铁电材料快报177 JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 材料科学与技术杂志178 JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE 材料工程与性能杂志179 METALS AND MATERIALS INTERNATIONAL 国际金属及材料180 GLASS TECHNOLOGY 玻璃技术181 JOURNAL OF MATERIALS PROCESSING TECHNOLOGY 材料加工技术杂志182 JOURNAL OF POLYMER MATERIALS 聚合物材料杂志183 ADVANCED POWDER TECHNOLOGY 先进粉末技术184 JOURNAL OF ADVANCED MATERIALS 先进材料杂志185 SYNTHESE 合成186 GLASS SCIENCE AND TECHNOLOGY-GLASTECHNISCHE BERICHTE 玻璃科学与技术187 JOURNAL OF TESTING AND EVALUATION 测试及评价杂志188 MATERIALS SCIENCE AND TECHNOLOGY 材料科学与技术189 POWDER METALLURGY AND METAL CERAMICS 粉末冶金及金属陶瓷190 MATERIALS SCIENCE 材料科学191 MATERIALS TECHNOLOGY 材料技术192 ADVANCED MATERIALS & PROCESSES 先进材料及工艺193 RARE METALS 稀有金属194 JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION 武汉理工大学学报-材料科学版195 PLATING AND SURFACE FINISHING 电镀和表面修整196 JOURNAL OF INORGANIC MATERIALS 无机材料杂志197 MATERIALS WORLD 材料世界198 METAL SCIENCE AND HEAT TREATMENT 金属科学及热处理199 METALL 金属200 MATERIALS PERFORMANCE 材料性能 201 JOURNAL OF MATERIALS PROCESSING & MANUFACTURING SCIENCE 材料加工与制造科学杂志202 SCIENCE AND ENGINEERING OF COMPOSITE MATERIALS 复合材料科学与工程203 IEEE TRANSACTIONS ON COMPONENTS AND PACKAGING TECHNOLOGIES IEEE元件及封装技术会刊204 JOCCA-SURFACE COATINGS INTERNATIONAL JOCCA—国际表面涂层205 ADVANCED FUNCTIONAL MATERIALS 先进功能材料 206 ANNUAL REVIEW OF MATERIALS RESEARCH 材料研究年度评论207 MATERIALS TRANSACTIONS 材料会刊

vacuum是什么期刊

vacuum是哪个国家的期刊

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不知道，随便给你一个疏水缔合型聚合物P(AMTA)溶液性质的研究疏水缔合型水溶性聚合物是指在聚合物亲水性大分子链上带有少量疏水基团的一类水溶性聚合物。在聚合物水溶液中，疏水基团之间由于憎水作用而发生聚集，使大分子链产生分子内和分子间缔合。在临界缔合质量分数以上，形成分子间缔合为主的超分子结构，增大了流体力学体积，故具有较好的增黏性。在盐溶液中，由于小分子电解质的加入增加了溶液极性，使疏水缔合作用增强，表现出明显的抗盐性质。疏水缔合型水溶性高分子很难合成，且不易表征，把疏水部分连接到水溶性聚合物链上，一般采用胶束共聚合或者使用具有表面活性的大单体进行共聚，胶束聚合需要在体系中加入大量的表面活性剂，这就增加了后处理过程的复杂性。利用表面大单体共聚合，需要事先合成大单体，这方面的技术也有相当大的难度。作者采用丙烯酸十四酯作为疏水单体，直接用沉淀聚合法制备疏水缔合型聚合物P(AM／TA)共聚物，从而使共聚反应及其产物的后处理过程较为简单易行。并用凯达尔定氮法表征共聚物的组成，研究共聚物的溶液性能和对苯丙乳液的增稠性。 1实验 1．1试剂丙烯酰胺(AM)，质量分数不少于985％，根据文献提供的方法提纯；N,N-甲基甲酰胺(DMF)，分析纯；甲醇、氯化钠，化学纯；丙烯酸十四酯(TA)，实验室自制；苯丙乳液由福建省福州树脂有限公司提供。 1．2P(AM/TA)共聚物的合成称取一定量的AM和TA单体，用DMF溶解，转入三颈瓶中，通氮除氧。升温至80℃，加入引发剂反应4h，过滤，产物用甲醇洗涤多次，以除去未反应的单体。40℃真空干燥至恒重。 1．3分析测试凯达尔定氮法测定共聚物的组成。用乌氏黏度计测定共聚物溶液特性黏度[η]，测试温度为(30±O1)℃。聚合物溶液表观黏度用NDJ-I型旋转黏度计测定。 2结果与讨论 2．1共聚物稀溶液性质不同疏水基团摩尔分数的P(AM／TA)共聚物在蒸馏水和w(NaCl)=5％的溶液中的特性黏度[η]值列于表1。聚合物的[η]正比于溶液中大分子线团的流体力学体积，因而能反应大分子线团收敛、卷曲的程度。从表1可知，随共聚物的TA链节摩尔分数的增加，其水溶液的[η]值逐渐减小，在w(NaCl)=5％的溶液中也是持续减小。这是因为在稀溶液中，疏水基团缔合以分子内缔合为主，随着TA摩尔分数的增加，分子内缔合增强，导致分子链卷曲。在盐溶液中，由于离子电荷的作用，使疏水链节分子内缔合力增强，分子链收缩，因而[η]值也持续下降。 2．2疏水基团TA摩尔分数对聚合物溶液黏度的影响图1和图2分别表示P(AM/TA)系列共聚物及PAM在蒸馏水和w(NaCl)=5％的溶液中表观黏度与聚合物质量分数的关系曲线。PAM溶液黏度随其质量分数的增加而平缓上升，而疏水共聚物溶液的质量分数为3O％～4O％时其黏度急剧增加，表明疏水基团聚集而导致分子间缔合，形成了物理交联网络。此时共聚物溶液的质量分数即是临界缔合的质量分数。如图1所示，随TA摩尔分数增加，共聚物溶液的黏度显著增加。当疏水基团摩尔分数较高时，其溶液黏度随质量分数增加的速度更快，共聚物的临界缔合质量分数降低。如图2所示，加入Nacl溶液后，溶液表观黏度有较大提高，如质量分数为O％的P(AM/TA)-1 5聚合物溶液在20℃，转速为6r／min时，黏度达OmPs，而在水溶液中的黏度只有374mPa·s。不同TA摩尔分数的聚合物的质量分数均较其在纯水中低。Hydrophobically associating polymer P (AMTA) the nature of the study solution Hydrophobically associating water-soluble polymer is the hydrophilic polymer with a small amount of macromolecular chain hydrophobic group of a class of water-soluble Aqueous solution in the polymer, the hydrophobic groups and between the role as a result of hydrophobic aggregation occurred, so that large molecules have a molecular chain and inter-molecular Associating the critical mass fraction of the above, the formation of intermolecular association based supramolecular structure, increases the volume of fluid mechanics, it has good by In salt solution, because of the addition of small molecule electrolyte solution increased polarity, so that co-operation with enhanced hydrophobic association, shows that the nature of the Hydrophobically associating water-soluble polymer-based synthesis is difficult and not easily characterized, in part to hydrophobic chains connected to the water-soluble polymer, the general use of micellar copolymerization, or the use of the large surfactant monomer to copolymerization, polymer micelles need in the system by adding a large number of surface-active agent, which, after an increase of the complexity of the The use of the surface monomer copolymerization, the need for prior synthesis of large monomer, this technology also has considerable Author tetradecyl acrylate used as a hydrophobic monomer, the direct use of precipitation polymerization Preparation of hydrophobically associating polymer P (AM / TA) copolymers, so that the product of copolymerization and post-processing is more simple and easy And characterization of nitrogen determination Kedar copolymer composition, study the solution properties of copolymers of styrene-acrylic emulsion and of the 1 Experimental 1 Reagents Acrylamide (AM), the mass fraction of not less than 985 percent, according to documents provided by purification methods; N, N-dimethylformamide (DMF),分析纯; methanol, sodium chloride, chemical pure; acrylic 10 four acetate (TA), laboratory-made; styrene-acrylic emulsion resin from Fuzhou in Fujian Province L 2P (AM / TA) Copolymer Check that a certain amount of monomer AM and TA, using DMF dissolved into three-neck bottle, pass oxygen Warming to 80 ℃, reaction by adding initiator 4h, filtering, washing the product several times with methanol to remove unreacted 40 ℃ vacuum drying to constant 3 Analysis and Testing Determination of nitrogen Kedar will be the composition of Determination of intrinsic viscosity with copolymer solution viscosity [η], the test temperature (30 ± O1) ℃ Apparent viscosity of polymer solution with NDJ-I-type rotary viscometer 2 Results and Discussion 1 Dilute Solution Properties of Copolymers of different mole fraction of hydrophobic groups of the P (AM / TA) copolymers in distilled water, and w (NaCl) = 5% of the solution intrinsic viscosity [η] values listed in Table Polymer [η] is proportional to the solution of the fluid dynamics of macromolecular coil volume, which can respond to the convergence coil macromolecules, the degree of We can see from Table 1, with the copolymer chain of the TA increase in mole fraction, the aqueous solution of [η] value decreases in w (NaCl) = 5% of the solution is continued to This is because in dilute solution, the hydrophobic group to intramolecular association based association, with the mole fraction of the increase in TA, to enhance intramolecular association, resulting in the molecular chain In salt solution, because of the role of ionic charge, so that intramolecular hydrophobic chain to enter into force enhancement, molecular chain contraction, so [η] value continued to TA hydrophobic group 2 mole fraction of polymer solution viscosity on the impact of figures 1 and 2, respectively, P (AM / TA) series of copolymers and PAM in distilled water, and w (NaCl) = 5% in the apparent viscosity of the solution and the relationship between the mass fraction of polymer PAM solution viscosity with the increase of mass fraction of gentle rise, and the hydrophobic copolymer solution for the mass fraction of 3O% ~ 4O%, when a sharp increase in viscosity, indicating that aggregation of hydrophobic groups and lead to intermolecular association, forming a physical crosslinking网络 At this point the mass fraction of copolymer solution that is the critical mass fraction of the As shown in Figure 1, with the mole fraction of TA increased, the viscosity of copolymer solution increased When the mole fraction of hydrophobic groups is high, the solution viscosity increases with the mass fraction of the faster, the critical aggregation copolymer mass fraction As shown in Figure 2, by adding Nacl solution, the solution has greatly enhanced apparent viscosity, such as the mass fraction of O% for the P (AM / TA) -1 5 polymer solution at 20 ℃, rotation speed 6r/min , the viscosity of OmPs, and viscosity in aqueous solution only 374mPa TA different mole fraction of the mass fraction of polymer in water were

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