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蜂胶和有机硅烷作为木质聚合物复合材料中的创新型混合改性剂

Propolis and Organosilanes as Innovative Hybrid Modifiers in Wood-Based Polymer Composites.

作者信息

Odalanowska Majka, Woźniak Magdalena, Ratajczak Izabela, Zielińska Daria, Cofta Grzegorz, Borysiak Sławomir

机构信息

Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60965 Poznan, Poland.

Department of Chemistry, Faculty of Forestry and Wood Technology, Poznan University of Life Sciences, Wojska Polskiego 75, 60625 Poznan, Poland.

出版信息

Materials (Basel). 2021 Jan 19;14(2):464. doi: 10.3390/ma14020464.

DOI:10.3390/ma14020464
PMID:33478032
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7836005/
Abstract

The article presents characteristics of wood/polypropylene composites, where the wood was treated with propolis extract (EEP) and innovative propolis-silane formulations. Special interest in propolis for wood impregnation is due to its antimicrobial properties. One propolis-silane formulation (EEP-TEOS/VTMOS) consisted of EEP, tetraethyl orthosilicate (TEOS), and vinyltrimethoxysilane (VTMOS), while the other (EEP-TEOS/OTEOS) contained EEP, tetraethyl orthosilicate (TEOS), and octyltriethoxysilane (OTEOS). The treated wood fillers were characterized by Fourier transform infrared spectroscopy (FTIR), atomic absorption spectrometry (AAS), and X-ray diffraction (XRD), while the composites were investigated using differential scanning calorimetry (DSC), X-ray diffraction (XRD), and optical microscopy. The wood treated with EEP and propolis-silane formulations showed resistance against moulds, including , , and . The chemical analyses confirmed presence of silanes and constituents of propolis in wood structure. In addition, treatment of wood with the propolis-silane formulations produced significant changes in nucleating abilities of wood in the polypropylene matrix, which was confirmed by an increase in crystallization temperature and crystal conversion, as well as a decrease in half-time of crystallization parameters compared to the untreated polymer matrix. In all the composites, the formation of a transcrystalline layer was observed, with the greatest rate recorded for the composite with the filler treated with EEP-TEOS/OTEOS. Moreover, impregnation of wood with propolis-silane formulations resulted in a considerable improvement of strength properties in the produced composites. A dependence was found between changes in the polymorphic structures of the polypropylene matrix and strength properties of composite materials. It needs to be stressed that to date literature sources have not reported on treatment of wood fillers using bifunctional modifiers providing a simultaneous effect of compatibility in the polymer-filler system or any protective effect against fungi.

摘要

本文介绍了木材/聚丙烯复合材料的特性，其中木材用蜂胶提取物（EEP）和创新的蜂胶 - 硅烷配方进行了处理。蜂胶因其抗菌性能而特别适用于木材浸渍。一种蜂胶 - 硅烷配方（EEP - TEOS/VTMOS）由EEP、正硅酸乙酯（TEOS）和乙烯基三甲氧基硅烷（VTMOS）组成，而另一种（EEP - TEOS/OTEOS）则包含EEP、正硅酸乙酯（TEOS）和辛基三乙氧基硅烷（OTEOS）。对处理过的木材填料进行了傅里叶变换红外光谱（FTIR）、原子吸收光谱（AAS）和X射线衍射（XRD）表征，而对复合材料则使用差示扫描量热法（DSC）、X射线衍射（XRD）和光学显微镜进行了研究。用EEP和蜂胶 - 硅烷配方处理的木材对霉菌具有抗性，包括 、 和 。化学分析证实了木材结构中硅烷和蜂胶成分的存在。此外，用蜂胶 - 硅烷配方处理木材使木材在聚丙烯基体中的成核能力发生了显著变化，这通过结晶温度和结晶转化率的升高以及与未处理的聚合物基体相比结晶参数半衰期的降低得到了证实。在所有复合材料中，均观察到了横晶层的形成，其中用EEP - TEOS/OTEOS处理的填料制成的复合材料横晶层形成速率最高。此外，用蜂胶 - 硅烷配方浸渍木材可显著提高所制备复合材料的强度性能。发现聚丙烯基体多晶结构的变化与复合材料的强度性能之间存在相关性。需要强调的是，迄今为止，文献来源尚未报道使用双功能改性剂处理木材填料的情况，这种改性剂能在聚合物 - 填料体系中同时提供相容性效果或对真菌的任何保护作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6db0/7836005/6c6e1c9789be/materials-14-00464-g007.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6db0/7836005/b17de0bd2685/materials-14-00464-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6db0/7836005/1fe9f37f14af/materials-14-00464-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6db0/7836005/2079c8617696/materials-14-00464-g003.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6db0/7836005/bfd4c7da7496/materials-14-00464-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6db0/7836005/6c6e1c9789be/materials-14-00464-g007.jpg

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