A series of non-toxic biodegradable and biocompatible polyurethanes bearing p-aminobenzoate moieties are presented. The introduction of this attractive motif was carried out by the synthesis of a novel isocyanate. These biodegradable polymers were chemically and physically characterized by several techniques and methods including bioassay and water uptake measurements. The molecular weight of the soft segment Read more about Biodegradable and Biocompatible Thermoplastic Poly(Ester-Urethane)s Based on Poly(ε-Caprolactone) and Novel 1,3-Propanediol Bis(4-Isocyanatobenzoate) Diisocyanate: Synthesis and Characterization[…]

Shape-memory polymers tend to present rigid behavior at ambient temperature, being unable to deform in this state. To obtain soft shape-memory elastomers, composites based on a commercial rubber crosslinked by both ionic and covalent bonds were developed, as these materials do not lose their elastomeric behavior below their transition (or activation) temperature (using ionic transition Read more about Shape-Memory Composites Based on Ionic Elastomers[…]

The synthesis of poly(urethane-urea) (PUUs) bearing deactivated diamines within the backbone polymer chain is presented. Several deactivated diamines present interesting properties for several applications in the biomaterial field due to their attractive biocompatibility. Through an activation with Chloro-(trimethyl)silane (Cl-TMS) during the polymerization reaction, the reactivity of these diamines against diisocyanates was triggered, leading to PUUs Read more about Preparation of High Molecular Weight Poly(urethane-urea)s Bearing Deactivated Diamines[…]

The synthesis of linear and crosslinked polyurethanes based on α,ω-dihydroxypolydiethylene glycol terephthalate (PDET) is described. Prior to the preparation of these materials, a PDET polymer was obtained by conventional condensation reaction between dimethyl terephthalate and diethylene glycol, and a well-characterized fraction of PDET with number average molecular weight of 3,650 g mol−1 was chosen for the synthesis of Read more about Properties of polyurethanes derived from poly(diethylene glycol terephthalate)[…]

The outstanding properties of carbon nanotubes (CNT) have generated a lot of interest at a scientist and industrial level. CNT have attracted great attention due to their exceptional mechanical, electrical and thermal properties and also for their large aspect ratio, that is, small size and higher surface area. On this regard, CNT-rubber composites have been Read more about New insight into structure-property relationships of natural rubber and styrene-butadiene rubber nanocomposites filled with MWCNT[…]

Adamantyl-BINOL as platform for chiral porous polymer aromatic frameworks. Multiple applications as recyclable catalysts Journal of Catalysis Cristina Monterde, Rodrigo Navarro, Marta Iglesias, Félix Sánchez DOI: 10.1016/j.jcat.2019.07.059 Links: [Journal of Catalysis]

Journal of Polymer Research Espinoza-García, K.a, Marcos-Fernández, A.b, Navarro, R.a, Ramírez-Hernández, A.a, Báez-García, J.E.c, Rangel-Porras, G.c a Departamento de Química, Universidad del Papaloapan, Oaxaca, México.b Institute of Polymer Science and Technology (CSIC), c/Juan de la Cierva 3, Madrid, Spainc División de Ciencias Exactas Departamento de Química, Universidad de Guanajuato, Guanajuato, México DOI: 10.1007/s10965-019-1821-6

Swelling of polymer networks with topological constraints: Application of the Helmis-Heinrich-Straube model Express Polymer Letters Basterra-Beroiz, B.a, Rommel, R.a, Kayser, F.a, Westermann, S.a, Valentín, J.L.b, Heinrich, G.c a Goodyear Innovation Center Luxembourg, Avenue Gordon Smith, Colmar-Berg, Luxembourgb Institute of Polymer Science and Technology (CSIC), c/Juan de la Cierva 3, Madrid, Spainc Leibniz-Institut für Polymerforschung Dresden Read more about Swelling of polymer networks with topological constraints: Application of the Helmis-Heinrich-Straube model[…]

Revisiting Segmental Order: A Simplified Approach for Sulfur-Cured Rubbers Considering Junction Fluctuations and Entanglements Macromolecules Basterra-Beroiz, B.a, Rommel, R.a, Kayser, F.a, Valentín, J.L.b, Westermann, S.a, Heinrich, G.c a Goodyear Innovation Center Luxembourg, Avenue Gordon Smith, Colmar-Berg, Luxembourg b Institute of Polymer Science and Technology (CSIC), c/Juan de la Cierva 3, Madrid, Spain c Leibniz-Institut für Read more about Revisiting Segmental Order: A Simplified Approach for Sulfur-Cured Rubbers Considering Junction Fluctuations and Entanglements[…]

Elimination of the Crystallinity of Long Polyethylene Oxide-Based Copolymers for Gas Separation Membranes by Using Electron Beam Irradiation Macromolecular Chemistry and Physics Angel Marcos‐Fernándeza Esbaide Ademb Alejandra Rubio Hernández‐Sampelayoa Jose E. Báezb Laura Palacioc Pedro Prádanosc Alberto Tenac Antonio Hernándezc a Institute of Polymer Science and Technology (CSIC), C/Juan de la Cierva 3, 28006 Madrid, Read more about Elimination of the Crystallinity of Long Polyethylene Oxide-Based Copolymers for Gas Separation Membranes by Using Electron Beam Irradiation[…]

Physical properties of biaxially oriented poly(ethylene terephtalate) irradiated at different temperatures and doses with electron beam Radiation Physics and Chemistry (2017) Adem, E.a, Hernández-Sampelayo, A.R.c, Báez, J.E.d, Miranda, J.a, Labrada-Delgado, G.J.b, Marcos-Fernández, A.c aInstituto de Física, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México D.F., Mexico bInstituto Potosino de Investigación Científica y Tecnológica, Read more about Physical properties of biaxially oriented poly(ethylene terephtalate) irradiated at different temperatures and doses with electron beam[…]

Physical properties of biaxially oriented poly(ethylene terephtalate) irradiated at different temperatures and doses with electron beam Radiation Physics and Chemistry, 2017, Volume 130, Pages 5-11 Adem, E.a, Hernández-Sampelayo, A.R.c, Báez, J.E.d, Miranda, J.a, Labrada-Delgado, G.J.b, Marcos-Fernández, A.c a Instituto de Física, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México D.F., Mexico b Instituto Read more about Physical properties of biaxially oriented poly(ethylene terephtalate) irradiated at different temperatures and doses with electron beam[…]

New Insights into Rubber Network Structure By a Combination of Experimental Techniques Rubber Chemistry and Technology (2016) Beatriz Basterra-Beroiz1, Robert Rommel1, Francois Kayser1, Stephan Westermann1, J. L. Valentín2,*, and G. Heinrich3 1Goodyear Innovation Center Luxembourg, Avenue Gordon Smith, L-7750 Colmar-Berg, Luxembourg 2Instituto de Ciencia y Tecnología de Polímeros (CSIC), c/Juan de la Cierva 3, 28006 Read more about New Insights into Rubber Network Structure By a Combination of Experimental Techniques[…]

The shape-memory effect in ionic elastomers: fixation through ionic interactions Soft Matter (2017) A. González-Jiméneza, M. A. Malmiercaa, P. Bernal-Ortegaa, P. Posadasa, R. Pérez-Aparicioa, A. Marcos-Fernándeza, A. González-Jiméneza, J.L. Valentína, a Institute of Polymer Science and Technology (CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain b Biomedical and Chemical Engineering Dept. and Syracuse Biomaterials Read more about Effect of entanglements in the microstructure of cured NR/SBR blends prepared by solution and mixing in a two-roll mill[…]