Bonding of THM modified Moso bamboo (Phyllostachys pubescens Mazel) using modified soybean protein isolate (SPI) based adhesives
The bondability/gluability of THM modified Moso bamboo specimens was tested and compared with unmodified Moso specimens as a reference. Five different SPI based adhesives were used for bonding. The SPI powder was thermally modified in a vacuum chamber at 50 or 100 °C and dispersions prepared at 24,...
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| Veröffentlicht in: | European journal of wood and wood products 2015-11, Vol.73 (6), p.781-792 |
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| creator | Semple, K. E Vnučec, D Kutnar, A Kamke, F. A Mikuljan, M Smith, G. D |
| description | The bondability/gluability of THM modified Moso bamboo specimens was tested and compared with unmodified Moso specimens as a reference. Five different SPI based adhesives were used for bonding. The SPI powder was thermally modified in a vacuum chamber at 50 or 100 °C and dispersions prepared at 24, 50, or 90 °C. Bond shear strengths of the adhesives were determined by lap-shear tests. Surface characteristics (roughness indices, Ra and Rz; and sessile droplet contact angle, CA) of compressed and uncompressed bamboo were measured. Bond shear strengths were mostly lower for THM-compressed bamboo tissue than uncompressed tissue. In the uncompressed controls there were no significant differences between adhesives. However in THM-compressed specimens, one formulation (50 °C modification temperature and 24 °C dispersion preparation temperature) had significantly higher bond shear strength. THM surfaces were characterised by high surface smoothness, likely little or no adhesive penetration into the surface due to observed void closure, and loss of adhesive from the bondline during pressing, all of which were believed to contribute to the significantly lower bond shear strength compared with control veneers. |
| doi_str_mv | 10.1007/s00107-015-0938-5 |
| format | Article |
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However in THM-compressed specimens, one formulation (50 °C modification temperature and 24 °C dispersion preparation temperature) had significantly higher bond shear strength. 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Surface characteristics (roughness indices, Ra and Rz; and sessile droplet contact angle, CA) of compressed and uncompressed bamboo were measured. Bond shear strengths were mostly lower for THM-compressed bamboo tissue than uncompressed tissue. In the uncompressed controls there were no significant differences between adhesives. However in THM-compressed specimens, one formulation (50 °C modification temperature and 24 °C dispersion preparation temperature) had significantly higher bond shear strength. THM surfaces were characterised by high surface smoothness, likely little or no adhesive penetration into the surface due to observed void closure, and loss of adhesive from the bondline during pressing, all of which were believed to contribute to the significantly lower bond shear strength compared with control veneers.</description><subject>Adhesion tests</subject><subject>Adhesive bonding</subject><subject>Adhesives</subject><subject>Bamboo</subject><subject>bamboos</subject><subject>Biomedical and Life Sciences</subject><subject>Bond strength</subject><subject>Ceramics</subject><subject>Composites</subject><subject>Contact angle</subject><subject>dispersions</subject><subject>Glass</subject><subject>Life Sciences</subject><subject>Machines</subject><subject>Manufacturing</subject><subject>Natural Materials</subject><subject>Original</subject><subject>Phyllostachys edulis</subject><subject>pressing</subject><subject>Processes</subject><subject>protein isolates</subject><subject>roughness</subject><subject>Shear strength</subject><subject>Shear tests</subject><subject>Smoothness</subject><subject>soy protein</subject><subject>Soybeans</subject><subject>Surface properties</subject><subject>temperature</subject><subject>Vacuum</subject><subject>Vacuum chambers</subject><subject>Wood Science & Technology</subject><issn>0018-3768</issn><issn>1436-736X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp9kUFP4zAQha0VSFux_ABOWNoLHMJ64thxjoAWqNSKSlCJm2U7dhuUxiWTrlRO_HRcZbV7wxcf_L73Zp4JOQN2BYyVv5AxYGXGQGSs4ioT38gECi6zksuXIzJJzyrjpVTfySniK0uHQ5FzPiEfN7Grm25FY6DPD3O6iXUTGl_TecRIrdnYGOnFYr1v24iDces90u3OenS-Qzo37769pDs8OPxDMe6tNx3d9nHwTUcbjK0ZPL14WkwvkycmjanXHps_Hn-Q42Ba9Kd_7xOyvPv9fPuQzR7vp7fXs8wVwIYsqMI5EKBEVVXGS6PABlcyqJkREhwvbRmYd5WUzgalRFpXWAam5N5Ym_MT8nP0TVO97TwO-jXu-i5F6jwlSOBcqKSCUeX6iNj7oLd9szH9XgPTh6712LVOXetD11okJh8ZTNpu5fv_zl9B5yMUTNRm1Teol085A3n4HAmy4J-O1oru</recordid><startdate>20151101</startdate><enddate>20151101</enddate><creator>Semple, K. 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E</au><au>Vnučec, D</au><au>Kutnar, A</au><au>Kamke, F. A</au><au>Mikuljan, M</au><au>Smith, G. D</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Bonding of THM modified Moso bamboo (Phyllostachys pubescens Mazel) using modified soybean protein isolate (SPI) based adhesives</atitle><jtitle>European journal of wood and wood products</jtitle><stitle>Eur. J. Wood Prod</stitle><date>2015-11-01</date><risdate>2015</risdate><volume>73</volume><issue>6</issue><spage>781</spage><epage>792</epage><pages>781-792</pages><issn>0018-3768</issn><eissn>1436-736X</eissn><abstract>The bondability/gluability of THM modified Moso bamboo specimens was tested and compared with unmodified Moso specimens as a reference. Five different SPI based adhesives were used for bonding. The SPI powder was thermally modified in a vacuum chamber at 50 or 100 °C and dispersions prepared at 24, 50, or 90 °C. Bond shear strengths of the adhesives were determined by lap-shear tests. 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| subjects | Adhesion tests Adhesive bonding Adhesives Bamboo bamboos Biomedical and Life Sciences Bond strength Ceramics Composites Contact angle dispersions Glass Life Sciences Machines Manufacturing Natural Materials Original Phyllostachys edulis pressing Processes protein isolates roughness Shear strength Shear tests Smoothness soy protein Soybeans Surface properties temperature Vacuum Vacuum chambers Wood Science & Technology |
| title | Bonding of THM modified Moso bamboo (Phyllostachys pubescens Mazel) using modified soybean protein isolate (SPI) based adhesives |
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