Jordi Puiggalí
Polytechnic University of Catalonia
Hydrogen bondCrystal structurePolyesterCopolymerOrganic chemistryChemistryPolymer chemistryPolyamideMaterials scienceCrystallizationAmideGlycolic acidMoleculeDifferential scanning calorimetryChemical engineeringPolymerNucleationStereochemistryLamellar structureCrystallography
323Publications
39H-index
5,544Citations
Publications 318
Newest
#1Alex Abramov (University of Regensburg)H-Index: 3
#2Binoy Maiti (University of Regensburg)H-Index: 11
Last. David Díaz (University of Regensburg)H-Index: 59
view all 7 authors...
A new methodology for the pH-triggered degradation of polymers or for the release of drugs under visible light irradiation based on the cyclization of ortho-hydroxy-cinnamates (oHC) to coumarins is described. The key oHC structural motif can be readily incorporated into the rational design of novel photocleavable polymers via click chemistry. This main-chain moiety undergoes a fast photocleavage when irradiated with 455 nm light provided that a suitable base is added. A series of polyethylene gl...
Source
#1Jordi SansH-Index: 2
Last. Carlos AlemánH-Index: 56
view all 6 authors...
Conversion of CO2 into valuable chemicals is not only a very challenging topic but also a socially demanding issue. In this work, permanently polarized hydroxyapatite obtained using a thermal stimulated polarization process is proposed as a highly selective catalyst for green production of ethanol starting from CO2 and CH4.
Source
#1Jordi Sans (UPC: Polytechnic University of Catalonia)H-Index: 2
#2Vanesa SanzH-Index: 16
Last. Carlos Alemán (UPC: Polytechnic University of Catalonia)H-Index: 56
view all 6 authors...
Abstract The enhanced catalytic activity of permanently polarized hydroxyapatite, which is achieved using a thermally stimulated polarization process, largely depends on both the experimental conditions used to prepare crystalline hydroxyapatite from its calcium and phosphate precursors and the polarization process parameters. A mineral to brushite, which is an apatitic phase that can evolve to hydroxyapatite, is found at the surface of highly crystalline hydroxyapatite. It appears after chemica...
Source
#1Reza Zeinali (UPC: Polytechnic University of Catalonia)H-Index: 1
#2Luis J. del Valle (UPC: Polytechnic University of Catalonia)H-Index: 26
Last. Jordi Puiggalí (UPC: Polytechnic University of Catalonia)H-Index: 39
view all 4 authors...
Porous biodegradable scaffolds provide a physical substrate for cells allowing them to attach, proliferate and guide the formation of new tissues. A variety of techniques have been developed to fabricate tissue engineering (TE) scaffolds, among them the most relevant is the thermally-induced phase separation (TIPS). This technique has been widely used in recent years to fabricate three-dimensional (3D) TE scaffolds. Low production cost, simple experimental procedure and easy processability toget...
Source
The self-assembly behavior of chemoenzymatic high molecular weight (ca. 30 000 Da) poly-L-phenylalanine (ePLP) and the nano-morphologies thereof are investigated. Interestingly, this supramolecular ePLP changes from a non-ordered secondary structure when solubilized in water to an α-helix with the addition of only 1 vol% HFIP co-solvent, and at a relatively low concentration (0.5 mg mL−1). The results also indicate a temperature-dependent structural stabilization, wherein the self-assembly proce...
Source
#2Omid YousefzadeH-Index: 9
Last. Jordi PuiggalíH-Index: 39
view all 4 authors...
Melt electrospinning has been developed in the last decade as an eco-friendly and solvent-free process to fill the gap between the advantages of solution electrospinning and the need of a cost-effective technique for industrial applications. Although the benefits of using melt electrospinning compared to solution electrospinning are impressive, there are still challenges that should be solved. These mainly concern to the improvement of polymer melt processability with reduction of polymer degrad...
Source
#1Jordi Sans (UPC: Polytechnic University of Catalonia)H-Index: 2
#2Vanesa SanzH-Index: 16
Last. Carlos Alemán (UPC: Polytechnic University of Catalonia)H-Index: 56
view all 5 authors...
The synthesis of hydroxyapatite (HAp) with different shapes and sizes has attracted increasing attention because the applicability of this ceramic material depends on structure-properties relations...
Source
#1Ina Keridou (UPC: Polytechnic University of Catalonia)H-Index: 3
#2Lourdes Franco (UPC: Polytechnic University of Catalonia)H-Index: 25
Last. Jordi Puiggalí (UPC: Polytechnic University of Catalonia)H-Index: 39
view all 7 authors...
Abstract Hydrolytic degradation of poly(4-hydroxybutyrate) (P4HB) films has been studied considering media of different pH values (i.e., 3, 7 and 10) and temperatures (i.e., 37 and 55 °C). Enzymatic degradation has also been evaluated at physiological conditions using two different lipases: Pseudomonas cepacia and Rhizopus oryzae. Different bulk and surface erosion mechanisms with random chain scissions and successive removal of monomer units have been supported through weight loss measurements,...
1 CitationsSource
#1Reza Zeinali (IAU: Islamic Azad University)
#1Reza Zeinali (IAU: Islamic Azad University)H-Index: 1
Last. Jordi Puiggalí (UPC: Polytechnic University of Catalonia)H-Index: 39
view all 6 authors...
Thermally induced phase separation followed by freeze drying has been used to prepare biodegradable and biocompatible scaffolds with interconnected 3D microporous structures from poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) copolymers containing 5 and 12 wt % of 3-hydroxyvalerate (HV). Solutions of PHBV in 1,4-dioxane, underwent phase separation by cooling under two different thermal gradients (at −25 °C and −5 °C). The cloud point and crystallization temperature of the polymer solutions were...
1 CitationsSource
#1Joan Miñano (UPC: Polytechnic University of Catalonia)
#2Jordi Puiggalí (UPC: Polytechnic University of Catalonia)H-Index: 39
Last. Lourdes Franco (UPC: Polytechnic University of Catalonia)H-Index: 25
view all 3 authors...
Abstract The influence of curcumin on the thermal stability and degradation kinetics of poly(glycolic acid) (PGA), poly-e-caprolactone (PCL) and their blend has been investigated in detail using thermogravimetric analysis. A 50/50 ratio was chosen for the blend and the effect caused by the addition of different percentages of curcumin (CUR) was evaluated. The thermogravimetric analysis was carried out under an atmosphere of inert nitrogen, operating in a dynamic regime at six different heating r...
Source