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radical polymerization是什么意思,radical polymerization的意思翻译、用法、同义词、例句

输入单词

常用词典

  • 游离基聚合;游离基引发聚合反应

  • 例句

  • The viscosity reducer A - 1 was synthesized from acrylic amide by radical polymerization and high molecular reaction.

    以************为原料,通过自由基聚合和高分子化学反应合成了降粘剂A-1。

  • Reversible addition-fragmentation chain transfer (RAFT) polymerization is one of the newest developed living radical polymerization.

    可逆加成断链链转移聚合(RAFT)是最新发展的活性自由基聚合之一。

  • The side-chain was oxidized to form peroxidate by oxygen in dry air, followed by radical polymerization during the film-forming process.

    该不饱和碳链基在干燥空气中进行游离基聚合;

  • MMA is selected as raw material of the preparation of MPOF. Compressed bulk free radical polymerization is adopted by means of analyzing polymerization method and polymerization mechanism.

    制备MPOF 的原料选用************酸甲酯(MMA),通过对聚合方法和聚合机理的分析,确定采用加压本体自由基聚合技术。

  • Polyvinylpyrrolidone (PVP) is a kind of fine polymer obtained by free radical polymerization of N-vinyl pyrrolidone (NVP).

    聚*********吡咯烷酮(PVP),是一种水溶性精细高分子聚合物。

  • There are some differences between plasma initiated polymerization (PIP) and classical radical polymerization.

    等离子体引发聚合与常规自由基聚合存在许多不同之处。

  • A stable hydrographic copolymerizational emulsion is manufactured through the reaction in the same system of the free radical polymerization and the cationic catalysis condensation.

    研制成功一种稳定的水性共聚乳液,它是在自由基型聚合和阳离子型催化缩聚的共同体系中反应制得的。

  • Polystyrenes with 1,1-diphenylethene(DPE) pendent groups were synthesized via atom transfer radical polymerization(ATRP).

    通过原子转移自由基聚合(ATRP)制备了含1,1-二苯基乙烯(DPE)侧基的聚*********。

  • A pigment dispersant for water borne system was prepared by free radical polymerization and stable free radical polymerization.

    采用自由基聚合和稳定自由基聚合,可合成水性体系用的颜料分散剂。

  • The influence of polymerization method was investigated by studying the properties of the IPN prepared by conventional radical polymerization.

    以常规自由基聚合方法制备了组成相近的IPN,考察了聚合方法对IPN性能的影响。

  • Atom Transfer Radical Polymerization (ATRP) is one of the most widely used method for controlled polymerization in labs.

    原子转移自由基聚合(ATRP)是目前实验室最常用的可控聚合方法之一。

  • A series of biodegradable crosslinked NVP scaffold materials were prepared by radical polymerization of the biodegradable crosslinking agents and NVP using azoisobutyronitrile (AIBN) as initiator.

    本研究的核心是利用该交联剂与N-*********吡咯烷酮(NVP)进行交联共聚反应,制得目前国内外最新型的组织工程支架材料。

  • Atom transfer radical polymerization is a new type of living radical polymerization method.

    原子转移自由基聚合是一种新的活性自由基聚合方法。

  • Effect of 12phosphomolybdic acid on free radical polymerization was stu***d in this paper with a dilatometer.

    用膨胀计法研究了12 -磷钼酸的自由基阻聚反应动力学。

  • But atomic transfer free radical polymerization should be concerned that might be a most useful method of polymerization controlling in the future.

    指出自由基乳液聚合或悬浮聚合,应该是国内目前研究的重点,而原子转移自由基聚合有可能成为最有前途的可控聚合方法。

  • Novel chiral polymer stationary phases were prepared by free-radical polymerization of 3 on silica gel.

    3在丙烯酰化硅胶表面发生自由基聚合反应,得到用于高效液相色谱柱的新型高分子手性固定相。

  • Macromonomer poly( N vinylformamide) and functional polymer microspheres are synthesized by radical polymerization, respectively.

    用自由基聚合法合成了大分子单体聚N乙烯甲酰胺和功能高分子微球。

  • The paper reviewed the modification of chitosan by free radical polymerization and atom transfer radical polymerization(ATRP), emphasized the application of ATRP on graft copolymerization of chitosan.

    综述了普通自由基聚合和原子转移自由基聚合(ATRP)反应对壳聚糖及其衍生物进行修饰改性的研究现状。着重介绍了ATRP技术在壳聚糖接枝改性方面的应用。

  • Cooling paste based on polyacrylate hydrogel was fabricated via radical polymerization.

    制备了以聚*********钠为基材的高分子水凝胶退热贴。

  • The mechanism of the Atom Transfer Radical Polymerization (ATRP) is discussed base on the review of the literature up to data as well as the authors' research results.

    在综述现有文献的基础上,结合作者的研究结果,对ATRP的反应机理进行了讨论。

  • At least one hydrophobic monomer is added in the free radical polymerization process.

    在所述的自 由基聚合过程中,至少一种疏水性单体被加入。

  • The majority of vinyl monomers can be used for free radical polymerization catalyst.

    *********类单体大多数可以采用游离基型催化剂进行聚合。

  • Z-1 was synthesized in water solution through radical polymerization. Intermediate isomer is one of the most important isomers.

    复鞣剂Z-1是活性单体在水溶液中通过自由基共聚合而得到,中间活性大分子单体为主要反应单体。

  • The third part is an overview of the principle, influence factors of atom transfer radical polymerization and an introduction of surface-initiated atom transfer radical polymerization.

    原子转移自由基聚合的原理、影响因素,并简单介绍了表面引发原子转移自由基聚合。

  • The free-radical polymerization of perdeuterated styrene (ST-D 8) with high conversion (\u003e85%), which was initiated by 2,2-azobis-iso-butyronitrile (AIBN), was investigated.

    以*********异丁腈(AIBN)为引发剂,首次研究了高转化率(>85%)下,温度、引发剂用量等对全氘代*********自由基本体聚合反应的影响。

  • It was found that molar rate of carboxylic groups and ether groups and the degree of polymerization of polyether side chain are key factors in the radical polymerization;

    实验表明:羧基与醚键的摩尔比率和聚醚侧链的聚合度是分子结构中的关键因子;

  • The polypropylene grafted copolymer is prepared through polymerization under mild condition and initiated with one kind of atom transferring free radical polymerization initiator.

    本发明公开了一种聚丙烯接枝共聚物,由一种原子转移自由基聚合引发剂在温和条件下引发聚合制备。

  • 专业解析

    自由基聚合(Radical Polymerization)是一种通过自由基中间体进行的链式聚合反应,是合成高分子聚合物最重要和最常用的方法之一。其核心在于利用自由基(带有未成对电子的高活性原子或基团)引发单体分子中的双键或环状结构打开,形成新的自由基并持续增长,最终生成高分子链。以下是详细解释:

    一、反应机理与步骤

    1. 链引发(Initiation)

      反应由引发剂(如过氧化物、偶氮化合物)受热或光照分解产生初级自由基开始。该自由基进攻单体(如乙烯、苯乙烯)的双键,形成单体自由基:

      $$ce{ I -> 2R• }$$

      $$ce{ R• + CH2=CHX -> R-CH2-CHX• }$$

      引发剂的选择直接影响聚合速率和聚合物结构 。

    2. 链增长(Propagation)

      单体自由基持续与新的单体分子加成,使链不断延长。该阶段反应速率快,分子量迅速增加:

      $$ce{ R-CH2-CHX• + nCH2=CHX -> R-(CH2-CHX)_n-CH2-CHX• }$$

      增长过程受单体浓度、温度及自由基活性的影响 。

    3. 链终止(Termination)

      两条自由基链通过偶合终止(两链结合)或歧化终止(氢原子转移形成饱和/不饱和端基)失去活性:

      $$ce{ 2R-(CH2-CHX)_n• -> R-(CH2-CHX)_n-(CHX-CH2)n-R quad (偶合)}$$

      $$ce{ -> R-(CH2-CHX){n}CH2-CH2X + R-(CH2-CHX)_{n}CH=CHX quad (歧化)}$$

      终止方式影响聚合物端基结构和分子量分布 。


    二、关键特征与影响因素


    三、应用与实例

    自由基聚合广泛用于工业生产常见聚合物,例如:


    参考文献

    1. Odian, G. Principles of Polymerization (4th ed.). Wiley, 2004. 链接
    2. American Chemical Society. "Radical Polymerization Fundamentals." Polymer Chemistry. 链接
    3. MIT OpenCourseWare. "Introduction to Polymer Chemistry." Course Notes. 链接

    网络扩展资料

    Radical Polymerization(自由基聚合)是一种通过自由基(含未成对电子的活性中间体)引发并传递链式反应的聚合方式。以下是详细解释:


    1.核心概念


    2.反应机理


    3.特点


    4.分类


    5.与其他聚合方式的对比


    自由基聚合是高分子工业中应用最广泛的聚合方法之一,因其操作简便且适用性广,但需通过技术改进(如活性自由基聚合)提升控制精度。

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