Fabrication of shape memory natural rubber using palmitic acid

Wee, Jeff Sze-Hua; Chai, Ai Bao; Ho, Jee-Hou

doi:10.1016/j.jksus.2017.09.003

Cited by 20 publications

(11 citation statements)

References 35 publications

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“…Asam palmitat yang merupakan asam lemak ternyata juga dapat digunakan sebagai alternatif bahan pembengkak dalam pembuatan SMP (Shape Memory Polymers) pada karet alam (Wee, Chai, & Ho, 2017…”

Section: Analysis Results Of Liquid Smoke From Trema Nani Merbau Maunclassified

Karakteristik Dan Potensi Pemanfaatan Asap Cair Kayu Trema, Nani, Merbau, Matoa, Dan Kayu Malas

Komarayati¹,

Gusmailina²,

Efiyanti³

2018

j.penelit.has.kehutan

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Wood is potential biomass with various benefits such as is utilizing them for liquid smoke raw material. Consequently, research on liquid smoke by pyrolysis should be conducted intensively to gain necessary information on the active content and utilization of the liquid smoke. This research is aimed to determine characteristics and potential utilization of liquid smoke made from trema, nani, merbau, matoa and malas wood. Research was conducted by pyrolysis process at 500°C for 5 hours and the liquid smoke was collected in container for analyzes. Analysis of liquid smoke characteristics included pH, specific gravity, acetic acid, phenol and other chemical component content using py-GCMS. The result showed that the pH ranged from 2.68 to 4.34, specific gravity ranged from 0.83 to 1.04, acetate 0.65-13.09%, and phenol content 0.19-2.50%. GCMS analysis showed chemical component diversity and its main component as identity of specific liquid smoke from five wood species confirmed were acetic acid (acetic acid, ethylic acid), phenolic (phenol, 2,6-dimethoxy (CAS) 2,6-dimethoxyphenol), and carbamic acid. The chemical component of liquid smoke is expected to be applied in wide variety of products based on product's perspective, objectives and product targets that would be achieved.

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Section: Analysis Results Of Liquid Smoke From Trema Nani Merbau Maunclassified

Karakteristik Dan Potensi Pemanfaatan Asap Cair Kayu Trema, Nani, Merbau, Matoa, Dan Kayu Malas

Komarayati¹,

Gusmailina²,

Efiyanti³

2018

j.penelit.has.kehutan

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“…Applications in biomedical engineering [103], biodegradable Metals are among the most used raw materials in adaptive technologies due to the versatility in their design on a material level, resistance and broad range of applications [6,40]. AM metals are either bonded as alloys reacting with a thermal/kinetic memory effect (Shape Memory/Change Alloys-SMAs/SCAs) or joined as separate metals that react due to the different thermal expansion coefficient of the two metals (Thermobimetals-TBs) [40,72].…”

Section: Natural Rubbermentioning

confidence: 99%

“…Many AMs are difficult to recycle (non-organic TEMs [40,90]) or recycling is hindered by the inability to separate the materials within the composed materials (composite polymers, alloys, µe-PCM [92]). Non-toxic or bio-compatible materials (glycerine based TEM and tPCMs, PET polymers, bio-based polymers [102,103]) are strongly growing in number and are starting to become market available.…”

Section: C1-c4 End Of Lifementioning

confidence: 99%

Review and Mapping of Parameters for the Early Stage Design of Adaptive Building Technologies through Life Cycle Assessment Tools

2019

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Adaptive Building Technologies have opened up a growing field of architectural research aimed at improving the overall building performance, ensuring comfort while reducing operational energy consumption. Focusing on flexibility over short timeframes, these new technologies are however rarely designed within the broader frame of sustainability over their entire lifecycle. How sustainable these zero energy technologies really are is yet to be established. The purpose of the research is to develop a flexible easy-to-use Life Cycle Assessment (LCA) tool to support creative innovation and sustainable design choices in the early concept and design stages of Adaptive Building Technologies. This paper reports on the results of the first step of the research, providing a mapping in terms of structure and contents of the parameters involved in the design of these technologies. Addressed from a holistic point of view, the elements of the system were defined though a qualitative approach: relevant parameters were collected through document analysis, reviewing the state-of-the-art technology through online databases as ScienceDirect, Scopus, MDPI, ResearchGate, and organized according to hierarchy and relevance in the different life cycle stages. As a result, the paper identifies (1) relevant parameters defining the design of Adaptive Building Technologies; (2) materials, processes and concepts specific to the design of these technologies, as compared to conventional building technologies; (3) issues and knowledge gaps to enable successive research phases; (4) specific actions in each life cycle stage for designers and producers to optimize the design of the technology. The mapping graphically and hierarchically organizes the elements of the system within a flexible structure to be implemented and integrated over time, as the technology evolves, to support parametric design and enable alternative design concepts to arise within a cradle-to-cradle perspective.

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“…Damage of the material will usually result in mechanical strain . Recovery of the original shape occurs during AMF heating . In the present work, we demonstrate strain sensing and triggered healing in the highly industrially important material, NBR.…”

Section: Introductionmentioning

confidence: 99%

Bio‐Inspired Multiple Cycle Healing and Damage Sensing in Elastomer–Magnet Nanocomposites

Panigrahi

Zarek

Sharma

et al. 2019

Macro Chemistry & Physics

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Damage‐sensing and healing are biological functions which are urgently required in structural health monitoring and remediation of engineering structures. The development of a bio‐inspired multiple cycle damage sensing and triggered healing magnet–polymer nanocomposite (Magpol) is reported. Magpol is comprised of an acrylonitrile butadiene co‐polymer (NBR) matrix and a magnetic nanoparticle (MNP) filler. Magpol nanocomposites in a range of MNP filler concentrations are studied. NBR is selected as the matrix due to its extensive use in industrial coatings, for example, in the automotive industry. Mn‐Zn ferrite MNP is chosen due to its appropriate Curie temperature and good specific absorption rate. Exposure of damaged Magpol to a remote external alternating magnetic field results in MNP heating. The MNP heats the surrounding NBR matrix, resulting in triggered healing. Fractured Magpol samples are successfully healed over several cycles. Incorporation of rhodamine b mechano‐chromophore in Magpol results in multicycle damage sensing by photo‐luminescent absorption. Thus, the developed Magpol is attractive for structural health monitoring and remediation application.

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Fabrication of shape memory natural rubber using palmitic acid

Cited by 20 publications

References 35 publications

Karakteristik Dan Potensi Pemanfaatan Asap Cair Kayu Trema, Nani, Merbau, Matoa, Dan Kayu Malas

Karakteristik Dan Potensi Pemanfaatan Asap Cair Kayu Trema, Nani, Merbau, Matoa, Dan Kayu Malas

Review and Mapping of Parameters for the Early Stage Design of Adaptive Building Technologies through Life Cycle Assessment Tools

Bio‐Inspired Multiple Cycle Healing and Damage Sensing in Elastomer–Magnet Nanocomposites

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