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Dive into the research topics where Joan C. Ronda is active.

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Featured researches published by Joan C. Ronda.


Biomacromolecules | 2009

Silicon-Containing Soybean-Oil-Based Copolymers. Synthesis and Properties

Marta Sacristán; Joan C. Ronda; Marina Galià; Virginia Cádiz

New silicon-containing soybean-oil-based copolymers were prepared from soybean oil, styrene, divinylbenzene, and p-trimethylsilylstyrene by cationic polymerization using boron trifluoride etherate as initiator. Soxhlet extraction and NMR spectroscopy indicate that the copolymers consist of a cross-linked network plasticized with varying amounts of oligomers and unreacted oil. This soluble fraction increases when the SiST content in the feed increases, according to a lower reactivity of this monomer. The thermal, dynamomechanical, and flame-retardant properties of these materials were examined. Thermosets with glass transition temperatures ranging from 50 to 62 degrees C, which are thermally stable below 350 degrees C, and with LOI values from 22.6 to 29.7 were obtained. Their properties suggest that these materials may prove to be useful alternatives for current non-renewable-based thermosets and that the flame-retardant properties of vegetable-oil-based thermosets can be improved by adding covalently bonded silicon to the polymer.


Macromolecular Rapid Communications | 2011

“Click” Synthesis of Fatty Acid Derivatives as Fast-Degrading Polyanhydride Precursors

Cristina Lluch; Gerard Lligadas; Joan C. Ronda; Marina Galià; Virginia Cádiz

Fast-degrading linear and branched polyanhydrides are obtained by melt-condensation of novel di- and tri-carboxylic acid monomers based on oleic and undecylenic acid synthesized using photoinitiated thiol-ene click chemistry. (1)H NMR spectroscopy, size exclusion chromatography, differential scanning calorimetry, thermogravimetric analysis, and FT-IR spectroscopy have been used to fully characterize these polymers. The hydrolytic degradation of these polymers was studied by means of weight loss, anhydride bond loss, and changes in molecular weight, showing fast degrading properties. Drug release studies from the synthesized polyanhydrides have also been conducted, using rhodamine B as a hydrophobic model drug, to evaluate the potential of these polymers in biomedical applications.


Biomacromolecules | 2017

SET-LRP in the Neoteric Ethyl Lactate Alcohol

Adrian Moreno; Diego Garcia; Marina Galià; Joan C. Ronda; Virginia Cádiz; Gerard Lligadas; Virgil Percec

Ethyl lactate (EtLa), a green and safe agrochemical solvent, is gifted with some properties that make it a good candidate for SET-LRP. It dissolves CuBr2, mediates an efficient disproportionation of CuBr in the presence of tris(2-(dimethylamino)ethyl)amine (Me6-TREN), and is capable to dissolve both aqueous (polar) and hydrocarbon (nonpolar) soluble monomers and polymers. Here, we report that EtLa is an excellent solvent for the Cu(0) wire-catalyzed SET-LRP to produce both hydrophilic and hydrophobic polyacrylates that exhibit precise chain end functionality. These results will expand the table of SET-LRP solvents with a new green member of biological origin that is also biodegradable and, therefore, are expected to contribute to continue expanding the use of SET-LRP in the field of biomacromolecules, bioconjugates, and other biology and medicine related disciplines.


Macromolecules | 1996

Metal-catalyzed living radical polymerization of styrene initiated with arenesulfonyl chlorides. From Heterogeneous to homogeneous catalysis

Virgil Percec; Bogdan Barboiu; Andreas Neumann; Joan C. Ronda; Mingyang Zhao


Biomacromolecules | 2007

Poly(ether urethane) networks from renewable resources as candidate biomaterials: synthesis and characterization.

Gerard Lligadas; Joan C. Ronda; Marina Galià; Virginia Cádiz


Biomacromolecules | 2006

Bionanocomposites from Renewable Resources: Epoxidized Linseed Oil−Polyhedral Oligomeric Silsesquioxanes Hybrid Materials

Gerard Lligadas; Joan C. Ronda; and Marina Galià; Virginia Cádiz


Biomacromolecules | 2010

Rapid approach to biobased telechelics through two one-pot thiol-ene click reactions.

Cristina Lluch; Joan C. Ronda; Marina Galià; Gerard Lligadas; Virginia Cádiz


Macromolecules | 1996

Tubular Architectures from Polymers with Tapered Side Groups. Assembly of Side Groups via a Rigid Helical Chain Conformation and Flexible Helical Chain Conformation Induced via Assembly of Side Groups

Virgil Percec; D. Schlueter; Joan C. Ronda; G. Johansson; Goran Ungar; J. P. Zhou


Biomacromolecules | 2007

Polyurethane Networks from Fatty-Acid-Based Aromatic Triols: Synthesis and Characterization

Gerard Lligadas; Joan C. Ronda; Marina Galià; Virginia Cádiz


Polymer | 2010

Synthesis and properties of boron-containing soybean oil based thermosetting copolymers

Marta Sacristán; Joan C. Ronda; Marina Galià; Virginia Cádiz

Collaboration


Dive into the Joan C. Ronda's collaboration.

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Marina Galià

Rovira i Virgili University

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Virginia Cádiz

Rovira i Virgili University

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Gerard Lligadas

University of Pennsylvania

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Virgil Percec

University of Pennsylvania

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Adrian Moreno

University of Pennsylvania

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Bogdan Barboiu

University of Pennsylvania

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Douglas Schlueter

Case Western Reserve University

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Gary Johansson

Case Western Reserve University

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Goran Ungar

University of Sheffield

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Mingyang Zhao

Case Western Reserve University

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