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首页> 外文期刊>RSC Advances >beta-Myrcene/isobornyl methacrylate SG1 nitroxide-mediated controlled radical polymerization: synthesis and characterization of gradient, diblock and triblock copolymers
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beta-Myrcene/isobornyl methacrylate SG1 nitroxide-mediated controlled radical polymerization: synthesis and characterization of gradient, diblock and triblock copolymers

机译：甲基丙烯酸甲基丙烯酸甲酯SG1丙烯酸酯介导的控制自由基聚合：梯度，二嵌段和三嵌段共聚物的合成和表征

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摘要

beta-Myrcene (My), a natural 1,3-diene, and isobornyl methacrylate (IBOMA), from partially bio-based raw materials sources, were copolymerized by nitroxide-mediated polymerization (NMP) in bulk using the SG1-based BlocBuilder (TM) alkoxyamine functionalized with an N-succinimidyl ester group, NHS-BlocBuilder, at T = 100 degrees C with initial IBOMA molar feed compositions f(IBOMA,0) = 0.10-0.90. Copolymer reactivity ratios were r(My) = 1.90-2.16 and r(IBOMA) = 0.02-0.07 using Fineman-Ross, Kelen-Tudos and non-linear least-squares fitting to the Mayo-Lewis terminal model and indicated the possibility of gradient My/IBOMA copolymers. A linear increase in molecular weight versus conversion and a low dispersity ((D) over bar = 1.41) were exhibited by My/IBOMA copolymerization with f(IBOMA,0) = 0.80. My-rich and IBOMA-rich copolymers were shown to have a high degree of chain-end fidelity by performing subsequent chain-extensions with IBOMA and/or My, and by P-31 NMR analysis. The preparation by NMP of My/IBOMA thermoplastic elastomers (TPEs), mostly bio-sourced, was then attempted. IBOMA-My-IBOMA triblock copolymers containing a minor fraction of My or styrene (S) units in the outer hard segments (M-n = 51-95 kg mol(-1), (D) over bar = 1.91-2.23 and F-IBOMA = 0.28-0.36) were synthesized using SG1-terminated poly(ethylene-stat-butylene) dialkoxyamine. The micro-phase separation was suggested by the detection of two distinct T(g)s at about -60 degrees C and +180 degrees C and confirmed by atomic force microscopy (AFM). A plastic stress-strain behavior (stress at break sigma(B) = 3.90 +/- 0.22 MPa, elongation at break epsilon(B) = 490 +/- 31%) associated to an upper service temperature of about 140 degrees C were also highlighted for these triblock polymers.
机译：的β-月桂烯（MY），天然-1,3-二烯，和丙烯酸异冰片酯（IBOMA），从部分地基于生物的原料来源，通过氮氧自由基调控聚合（NMP）在散装使用基于SG1-BlocBuilder（共聚TM）烷氧基胺与N-琥珀酰亚胺基酯基团，NHS-BlocBuilder，在T = 100℃，初始IBOMA摩尔进料组合物F（IBOMA，0）= 0.10-0.90官能化。共聚物的反应性比为R（我）= 1.90-2.16和r（IBOMA）=使用恩曼 - 罗斯，Kelen-Tudos和非线性最小二乘拟合梅奥路易斯终端模型0.02-0.07和表示的梯度的可能性我/ IBOMA共聚物。在分子量相对于转化和低分散性的线性增加（（d）在巴≤= 1.41）通过我/ IBOMA共聚以f（IBOMA，0）＆下显示出; = 0.80。我的富和IBOMA富共聚物所示执行后续链的扩展与IBOMA和/或我的，并且通过P-31 NMR分析来具有高度的链端的保真度。通过我的NMP / IBOMA热塑性弹性体（TPE），制备大多是生物源，然后尝试。 IBOMA-MY-IBOMA含有我或苯乙烯（S）单元的一小部分在外侧的硬链段的三嵌段共聚物（Mn = 51-95公斤摩尔（-1），（d）在巴= 1.91-2.23和F-IBOMA = 0.28-0.36）使用SG1封端的聚（乙烯 - STAT - 丁烯）dialkoxyamine合成。微相分离在约-60℃和180℃的建议通过检测两个不同的T（G）S和通过原子力显微镜（AFM）证实。一种塑料的应力 - 应变行为（断裂应力西格马（B）= 3.90 +/- 0.22兆帕，断裂的ε-（B）= 490 +/- 31％的伸长率）相关联，以约140摄氏度也上部服务温度强调了这些三嵌段聚合物。

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  • 来源
    《RSC Advances》 |2019年第6期|共19页
  • 作者

    Metafiot Adrien; Gagnon Lysandre; Pruvost Sebastien; Hubert Pascal; Gerard Jean-Francois; Defoort Brigitte; Maric Milan;

  • 作者单位

    McGill Univ Dept Chem Engn 3610 Univ St Montreal PQ H3A 0C5 Canada;

    McGill Univ Dept Chem Engn 3610 Univ St Montreal PQ H3A 0C5 Canada;

    INSA Lyon IMP CNRS UMR5223 17 Jean Capelle Ave F-69621 Villeurbanne France;

    McGill Univ Dept Mech Engn 817 Sherbrooke St W Montreal PQ H3A 0C3 Canada;

    INSA Lyon IMP CNRS UMR5223 17 Jean Capelle Ave F-69621 Villeurbanne France;

    ArianeGroup Ave Gen Niox F-33160 St Medard En Jalles France;

    McGill Univ Dept Chem Engn 3610 Univ St Montreal PQ H3A 0C5 Canada;

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  • 正文语种 eng
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