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|Title:||Influence of the injection moulding parameters on the microstructure and thermal properties of microcellular polyethylene terephthalate glycol foams|
|Abstract:||Self-hybrid thermoplastic composites (combination of two fiber sizes) were obtained by injection molding using pine or agave fibers with polypropylene (PP). The effect of self-hybridization was determined through mechanical properties and water absorption for different total fiber contents between 10 and 30% wt. The results showed that impact strength (30% of fiber) and tensile modulus (20% of fiber) were improved by self-hybridization compared with composites formulated with only one fiber size. Flexural properties were not improved by self-hybridization. On the other hand, the combination of two fiber sizes had no effect on the water absorption behavior of these composites. Overall, the total fiber content was found to be an important parameter with 20% being the optimum condition where self-hybridization provides the best mechanical properties. " 2013 Society of Plastics Engineers.",,,,,,"10.1002/pc.22834",,,"http://hdl.handle.net/20.500.12104/42267","http://www.scopus.com/inward/record.url?eid=2-s2.0-84905921076&partnerID=40&md5=771a5e25dec827f78f0a2b0712f3dd70",,,,,,"9",,"Polymer Composites",,"1798|
WOS",,,,,,,,,,,,"Injection molded self-hybrid composites based on polypropylene and natural fibers",,"Article" "44014","123456789/35008",,"Padilla-Lopez, H., Depto. de Ing. Química, Universidad de Guadalajara, Blvd. Gral. Marcelino G.B. #1451, Guadalajara, Jalisco, C.P. 44430, Mexico; Vázquez, M.O., Depto. de Ing. Química, Universidad de Guadalajara, Blvd. Gral. Marcelino G.B. #1451, Guadalajara, Jalisco, C.P. 44430, Mexico; González-Núñez, R., Depto. de Ing. Química, Universidad de Guadalajara, Blvd. Gral. Marcelino G.B. #1451, Guadalajara, Jalisco, C.P. 44430, Mexico; Rodrigue, D., Department of Chemical Engineering, CERSIM, Laval University, Quebec, Que., G1K 7P4, Canada",,"Padilla-Lopez, H.
Rodrigue, D.",,"2003",,"The deformation of the dispersed phase in polystyrene/high density polyethylene (PS/HDPE) blends produced by ribbon extrusion was studied numerically and experimentally. A mathematical model for the deformation of the dispersed phase in ribbon extrusion processing of polymer blends was developed assuming uniaxial deformation of the ribbon and the equilibrium shapes of the dispersed particles with a pressure balance over a drop. Simulated morphologies as function of the post-extrusion parameters were obtained and compared with experiments. The analysis of the ribbon extrusion process showed that parameters such as draw ratio (DR) and ribbon-water contact length (X) significantly influence the ribbon dimensions, the extensional stress, and the stretching force. The results also showed that deformation and coalescence of the dispersed phase in the ribbon extrusion processing of polymer blends increase at higher DR and/or lower X values. The comparison between the model and the experimental morphologies of PS/HDPE produced a good agreement.",,,,,,,,,"http://hdl.handle.net/20.500.12104/42235","http://www.scopus.com/inward/record.url?eid=2-s2.0-1542605236&partnerID=40&md5=509e76c57baffb05823dd8be70e633af",,,,,,"10",,"Polymer Engineering and Science",,"1646
WOS",,,,,,"Engineering; Polymer Science",,,,,,"Influence of Post-Extrusion Parameters on the Final Morphology of Polystyrene/High Density Polyethylene Blends",,"Article" "45200","123456789/35008",,"Medina-Urrutia, V.M., Universidad de Guadalajara, Centro Universitario de Ciencias Biológicas y Agropecuarias, Las Agujas Municipio de Zapopan, Zapopan Jalisco, CP 45110, Mexico; Vázquez-García, M., Universidad de Guadalajara, Centro Universitario de Ciencias Biológicas y Agropecuarias, Las Agujas Municipio de Zapopan, Zapopan Jalisco, CP 45110, Mexico; Virgen-Calleros, G., Universidad de Guadalajara, Centro Universitario de Ciencias Biológicas y Agropecuarias, Las Agujas Municipio de Zapopan, Zapopan Jalisco, CP 45110, Mexico",,"Medina-Urrutia, V.M.
Virgen-Calleros, G.",,"2011",,"Eight percent of total planted area in Mexico is in the process to change from conventional to organic system mainly in the Pacific Coast under tropical dry and wet conditions. Mango cultivars in organic systems are 'Tommy Atkins', 'Kent', 'Ataulfo' which are demanded by market and early or late season of harvest. Cultivars are grafted on local polyembrionic rootstock well adapted to different soil types, they remain vigorous but tolerance to soil diseases has not been proved yet. Information of better combinations of rootstocks and cultivars appropriated for organic production and adapted to variable soil conditions, is needed. Plant densities range 100 to 200 trees ha -1, but are rapidly changing to higher tree densities. Either, tillage practices or cover crops are used to avoid herbicides to control weeds in between tree rows. Pruning of trees is a very important activity applied by growers to control tree size, avoid pest and diseases and promote better light conditions in internal canopy to improve fruit color. Many diseases affect tree foliage, flowering and fruits and are properly controlled using permitted products listed by IFOAM. However organic and more efficient alternatives are needed in order to control the wide diversity of diseases in the field. In addition to field applications, anthracnose damage on fruits is controlled by means of postharvest hot water treatments. Fruit flies are important pests, but they are kept under control with integrated management program applied to different regions according to population levels. Several organic products are used to fertilize orchards, but beneficial impact on fruit production and quality remain to be thoroughly clarified.",,,,,,,,,"http://hdl.handle.net/20.500.12104/43421","http://www.scopus.com/inward/record.url?eid=2-s2.0-80053342680&partnerID=40&md5=027b3d141e1e177fe95d758bbfa7dd03",,,,,,,,"Acta Horticulturae",,"255
264",,"894",,"Scopus",,,,,,"Cultivars; Mangifera indica L.; Pest biological control; Rootstocks; Vermicompost; Weed control",,,,,,"Organic mango production in Mexico: Status of orchard management",,"Conference Paper" "44020","123456789/35008",,"Gómez-Gómez, F.J., Departamento Proyectos de Diseño, Universidad de Guadalajara, Jalisco, Mexico; Arenc n, D., Centre Catalá del Plastic, Departament de Ciència dels Materials i Enginyeria Metal.lúrgica, Barcelona TECH, C/ Colom 144, 08222 Terrassa, Spain; Sánchez-Soto, M. ., Centre Catalá del Plastic, Departament de Ciència dels Materials i Enginyeria Metal.lúrgica, Barcelona TECH, C/ Colom 144, 08222 Terrassa, Spain; Martínez, A.B., Centre Catalá del Plastic, Departament de Ciència dels Materials i Enginyeria Metal.lúrgica, Barcelona TECH, C/ Colom 144, 08222 Terrassa, Spain",,"Gomez-Gomez, F.J.
Martinez, A.B.",,"2013",,"Microcellular injection moulding is capable of producing lightweight polymeric products. The present study analyses the influence of several representative injection moulding parameters on the foam's morphology, apparent density and thermo-mechanical properties of PETG, poly(ethylene terephthalate-co-1,4-cyclohexylene-dimethylene terephthalate) specimens. A strong variation of the cell morphology along the melt flow direction has been found, as well as a dependence on the shot volume. The most homogeneous microcellular structure is achieved when low shot volume, intermediate injection speed and low mould temperature are employed. The skin-core structure of the injected parts, determined the thermo-mechanical features of the specimen, which are ruled by the skin layer. " 2012 The Author(s).
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