Exploring the influence of rigid carbocycles on terpenoid copolymer properties
Exploring the influence of rigid carbocycles on terpenoid copolymer properties
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探讨刚性碳环对萜类共聚物性能的影响
DOI：
10.1002/pol.20230125
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发表时间：
2023
影响因子：
3.4
通讯作者：
Brantley, Johnathan N.
中科院分区：
文献类型：
--
作者：
Galan, Nicholas J.;Fried, Alan D.;Cromer, Chase E.;Fish, Abigail;Coughlin, Dominic R.;Brantley, Johnathan N.
合成具有不寻常结构元素的软聚合物对于增强我们对大分子中基本结构-性质关系的理解至关重要。萜类材料是解决这一重大挑战的有趣候选者，因为它们的组成单体可以表现出各种各样的结构和官能团。此外，这些生物衍生材料可以潜在地扩大围绕相关石化衍生聚合物趋势的知识范围。例如，异戊烯和无环烯烃的乙烯基加成共聚物可以表现出可预测的性质（例如，Tgas的线性变化是组成的函数）。然而，由于合成限制，尚不清楚其他刚性碳环是否在一系列共聚物中产生类似的行为。由于许多萜烯支架显示出刚性基序（如蒎烷系统），因此萜类聚合物被独特地定位以解决该缺陷。在这里，我们报告了萜烯类共聚物（统计和嵌段）的合成和表征与系统定制的组合物的基于蒎烯的共聚单体。我们发现，pinane核心（这是一个组成异构体的降冰片烯）似乎促进理想的行为方面的统计共聚物，这反映了降冰片烯为基础的系统的行为的整体热性能。我们还发现，嵌段共聚物表现出的热机械性能，是高度可调的（和明显相关的碳环组合物）。
Synthesizing soft polymers with uncommon architectural elements is critical for enhancing our understanding of fundamental structure–property relationships in macromolecules. Terpenoid materials are interesting candidates for addressing this grand challenge, as their constituent monomers can exhibit a diverse array of structural and functional groups. Moreover, these biologically‐derived materials can potentially expand the sphere of knowledge surrounding trends in related petrochemically‐derived polymers. For example, vinyl‐addition copolymers of norbornene and acyclic olefins can exhibit predictable properties (e.g., linear changes inTgas a function of composition). Due to synthetic limitations, however, it is not well understood if other rigid carbocycles engender similar behavior in a range of copolymers. As numerous terpene scaffolds display rigid motifs (such as pinane systems), terpenoid polymers are uniquely positioned to address this deficiency. Here, we report the synthesis and characterization of terpenoid copolymers (both statistical and block) with systematically tailored compositions of pinene‐based comonomers. We found that the pinane core (which is a constitutional isomer of norbornene) appears to promote ideal behavior with regard to bulk thermal properties of statistical copolymers, which mirrors the behavior of norbornene‐based systems. We also found that block copolymers exhibited thermomechanical properties that were highly tunable (and apparently correlated to carbocycle composition).
π-烯丙基镍催化剂对亚烷基的活性配位聚合：观察到 1,2-环壬二烯的极高聚合性
影响因子：
1.6
作者：
Koji Takagi;I. Tomita;T. Endo
通讯作者：
T. Endo
DOI：
10.1002/pol.1966.150040413
发表时间：
1966-01-01
期刊：
JOURNAL OF POLYMER SCIENCE PART A-1-POLYMER CHEMISTRY
影响因子：
--
作者：
MIZOTE, A;TANAKA, T;OKAMURA, S
通讯作者：
OKAMURA, S
高氟化环烯烃与乙烯基醚的自由基共聚行为
DOI：
10.1002/pola.10198
发表时间：
2002
期刊：
Journal of Polymer Science Part A
影响因子：
--
作者：
S. Nishida;H. Nishida;T. Endo
通讯作者：
T. Endo