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Developing a TRL-oriented roadmap for the adoption of biocomposite materials in the construction industry

Tudor-Cristian PETRESCU, Johannes T. VOORDIJK, Petru MIHAI

《工程管理前沿（英文）》 2023年第10卷第2期页码 223-236 doi: 10.1007/s42524-021-0154-4

摘要： The construction industry is a major contributor to environmental pollution. The effect of the construction industry on the environment may be mitigated using eco-friendly construction materials, such as biocomposites. Once developed, biocomposites may offer a viable alternative to the current materials in use. However, biocomposites are lagging in terms of adoption and eventual use in the construction industry. This article provides insights into the steps for biocomposites to become a product that is ready to use by the construction industry in a structural role. The development and the adoption of such a material is tackled with the use of two concepts, i.e., technology readiness level and roadmapping, and explored in a case study on the “liquid wood”. Furthermore, interviews in the construction industry are carried out to identify the industry’s take on biocomposites. A customized roadmap, which underlines a mostly nontechnical perspective concerning this material, has emerged. Additionally, the adoption and diffusion issues that the “liquid wood” may encounter are outlined and complemented with further recommendations.

关键词： biocomposite technology readiness level roadmap interview “liquid wood”

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Strengthening mechanisms in carbon nanotube reinforced bioglass composites

Jing ZHANG, Chengchang JIA, Zhizhong JIA, Jillian LADEGARD, Yanhong GU, Junhui NIE

《化学科学与工程前沿（英文）》 2012年第6卷第2期页码 126-131 doi: 10.1007/s11705-012-1279-0

摘要： Carbon nanotube reinforced bioglass composites have been successfully synthesized by two comparative sintering techniques, i.e., spark plasma sintering (SPS) and conventional compaction and sinteirng. The composites show improved mechanical properties, with SPS technique substantially better than conventional compact and sintering approach. Using SPS, compared with the 45S5Bioglass matrix, the maximum flexural strength and fracture toughness increased by 159% and 105%, respectively. Enhanced strength and toughness are attributed to the interfacial bonding and bridging effects between the carbon nanotubes and bioglass powders during crack propagations.

关键词： 45S5Bioglass multi-wall carbon nanotubes biocomposite mechanical properties sintering

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Experimental evaluation and simulation of volumetric shrinkage and warpage on polymeric composite short natural fibers reinforced injection molded

Jonnathan D. SANTOS,Jorge I. FAJARDO,Alvaro R. CUJI,Jaime A. GARCÍA,Luis E. GARZÓN,Luis M. LÓPEZ

《机械工程前沿（英文）》 2015年第10卷第3期页码 287-293 doi: 10.1007/s11465-015-0346-x

摘要：

A polymeric natural fiber-reinforced composite is developed by extrusion and injection molding process. The shrinkage and warpage of high-density polyethylene reinforced with short natural fibers of Guadua angustifolia Kunth are analyzed by experimental measurements and computer simulations. Autodesk Moldflow^® and Solid Works^® are employed to simulate both volumetric shrinkage and warpage of injected parts at different configurations: 0 wt.%, 20 wt.%, 30 wt.% and 40 wt.% reinforcing on shrinkage and warpage behavior of polymer composite. Become evident the restrictive effect of reinforcing on the volumetric shrinkage and warpage of injected parts. The results indicate that volumetric shrinkage of natural composite is reduced up to 58% with fiber increasing, whereas the warpage shows a reduction form 79% to 86% with major fiber content. These results suggest that it is a highly beneficial use of natural fibers to improve the assembly properties of polymeric natural fiber-reinforced composites.

关键词： biocomposite natural fiber shrinkage simulation warpage

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用于实时皮肤创面愈合的超强工程化蛋白凝聚体黏合剂 Article

李铭, 柳柏梅, 徐炜, 赵来, 王自立, 何浩男, 李敬敬, 王帆, 马超, 刘凯, 张洪杰

《工程（英文）》 2023年第31卷第12期页码 76-85 doi: 10.1016/j.eng.2023.07.013

摘要：

黏合剂作为生物医学工程中的一种先进方式，因其独特的伤口管理行为而备受关注。然而，由于当前的黏合剂系统界面粘合强度较弱，要实现牢固的黏合仍是一项巨大的挑战。此外，传统化学黏合剂缺乏动态适应性，限制了伤口周围的新生细胞向该部分迁移，导致组织再生效果不佳。在此，我们精心设计了一种具有强大黏附力和实时促皮肤愈合效果的细胞外基质衍生的生物复合黏合剂。在嵌合蛋白和天然DNA间超分子相互作用的积极参与下，液-液相分离被很好地用来驱动生物复合黏合剂的组装，从而获得增强的黏合性能。该生物黏合剂具有出色的黏合和止血性能，其中，剪切黏合强度约18 MPa，优于已报道的同类产品。此外，工程生物衍生成分赋予了该黏合材料优异的生物相容性和特殊的生物学功能，包括促进细胞增殖和迁移，因此使用这种材料最终可实现实时原位皮肤再生。这项工作为功能化生物黏合剂工程和生物医学转化开辟了新的途径。

关键词：生物复合黏合剂蛋白 DNA 凝聚物皮肤愈合