Quantification of Structure-Property Relationships for Plant Polyesters Reveals Suberin and Cutin Idiosyncrasies.
Quantification of Structure-Property Relationships for Plant Polyesters Reveals Suberin and Cutin Idiosyncrasies.
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DOI：
10.1021/acssuschemeng.1c04733
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发表时间：
2021-11-29
影响因子：
8.4
通讯作者：
Silva Pereira C
中科院分区：
文献类型：
--
作者：
Bento A;Moreira CJS;Correia VG;Escórcio R;Rodrigues R;Tomé AS;Geneix N;Petit J;Bakan B;Rothan C;Mykhaylyk OO;Silva Pereira C
聚酯，因为它们存在于植物中，是很有前途的材料，可以用来开始开发“绿色”替代品。角质素和木质素是植物中普遍存在的聚酯，是主要的候选物质。研究人员对富含植物聚酯的样品进行了研究，以确定“天然”结构特征；影响关键物理性质的特性。定量核磁共振（NMR）、差示扫描量热法（DSC）和x射线散射方法被用来量化这些聚合物材料的结构-性能关系。观察了酯化程度，即在木质素中存在酰基甘油键，在角质中存在二级酯，以及中链环氧化物基团的存在，这些基团定义了脂肪链的填充。这种填料决定了聚合物的结晶度、晶体结构和熔化温度。为了评估这一规律的强度，我们分析了来自同一基因型的番茄角质，研究了野生型植株和两个特征良好的突变体。结果表明，角质的材料性质受未结合的脂肪羟基数量和脂肪链长度的影响。总的来说，获得的数据可以作为指导选择具有精确结构特征的植物聚酯的工具，从而具有物理化学性质。对植物聚酯的详细了解确定了结构特征与物理特性之间的相关性，这些相关性可转化为开发新型绿色材料的五个基本规则。
Polyesters, as they exist in planta, are promising materials with which to begin the development of “green” replacements. Cutin and suberin, polyesters found ubiquitously in plants, are prime candidates. Samples enriched for plant polyesters, and in which their native backbones were largely preserved, were studied to identify “natural” structural features; features that influence critical physical properties. Quantitative nuclear magnetic resonance (NMR), differential scanning calorimetry (DSC), and X-ray scattering methods were used to quantify structure–property relationships in these polymeric materials. The degree of esterification, namely, the presence of acylglycerol linkages in suberin and of secondary esters in cutin, and the existence of mid-chain epoxide groups defining the packing of the aliphatic chains were observed. This packing determines polymer crystallinity, the resulting crystal structure, and the melting temperature. To evaluate the strength of this rule, tomato cutin from the same genotype, studying wild-type plants and two well-characterized mutants, was analyzed. The results show that cutin’s material properties are influenced by the amount of unbound aliphatic hydroxyl groups and by the length of the aliphatic chain. Collectively, the acquired data can be used as a tool to guide the selection of plant polyesters with precise structural features, and hence physicochemical properties. A detailed insight into plant polyesters identifies correlations of structural features with physical properties that are translated into five essential rules for the development of novel green materials.
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影响因子：
7.4
作者：
Hartman, Blaine E.;Hatcher, Patrick G.
通讯作者：
Hatcher, Patrick G.
影响因子：
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DOI：
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