ABSTRACT The design of smart materials based on different natural and synthetic polymers represen... more ABSTRACT The design of smart materials based on different natural and synthetic polymers represents one of the most attractive research areas over the last several years. Many efforts have been carried out to find new solutions for developing stimuli-responsive polymers sensitive to different triggers, which have a fast and reversible nonlinear response to small changes of external stimuli or environmental conditions. In combination with other organic/innorganic/macromolecular compounds, new composite materials owning multifunctional properties can be designed. Thus, the inorganic nanoparticles incorporated into a polymer matrix provide novel functionalities to hydrogels and tunable properties. This book reviews recent advances and developments of various classes of stimuli responsive polymer materials, different type of hydrogels for biomedical and pharmaceutical devices, scaffolds for tissue regeneration, and stimuli-responsive sensors or separation processes.
The polymerization process of 2-hydroxyethyl methacrylate (HEMA) with an acetal-type crosslinking... more The polymerization process of 2-hydroxyethyl methacrylate (HEMA) with an acetal-type crosslinking agent3, 9-divinyl-2, 4, 8, 10-tetraoxaspiro [5.5]-undecane (U)was investigated. The copolymers synthesis has been performed in emulsion in the presence ...
A polyacrylamide hydrogel having a thermoresponsive character was prepared by simultaneous crossl... more A polyacrylamide hydrogel having a thermoresponsive character was prepared by simultaneous crosslinking solution copolymerization method. Different thermoresponsive properties were obtained by changing the initial ratio of acrylamide and N,N'-methylenebisacrylamide as crosslinker. The swelling behaviour in water until equilibrium was evaluated for all the hydrogel systems.
In the study hydrogels poly(acrylamide) based with different concentration of N,N'-methyleneb... more In the study hydrogels poly(acrylamide) based with different concentration of N,N'-methylenebis(acrylamide) as a crosslinker agent were prepared using a redox polymerization system. The observations on equilibrium swelling and thermal analysis are related with the thermoresponsive character. This aspect is in relation with the copolymer destination as an inner material for cold therapy packs.
The arising problems using hematoxylin as a dye, is their oxidization to hematein. This process i... more The arising problems using hematoxylin as a dye, is their oxidization to hematein. This process is called ripening. The oxidation is achieved by adding a wide variety of oxidizing agents, the two most common being sodium iodate and mercuric oxide. The paper presents the possibilities of hematoxylin ripening in plasma conditions.
It is well known that hydrogels are suitable for biomedical, agricultural and industrial applicat... more It is well known that hydrogels are suitable for biomedical, agricultural and industrial applications. In particular, they have been widely used for the preparation of drug-delivery systems. In this study, hydrogels of poly(acrylamide) with different concentration of N,N'-methylenebis(acrylamide) as a crosslinker were prepared by a redox polymerization method. The observations on equilibrium swelling and thermal analysis are related with the thermoresponsive character. This aspect is in relation with the copolymer destination as an inner material for cold therapy packs.
ABSTRACT The design of smart materials based on different natural and synthetic polymers represen... more ABSTRACT The design of smart materials based on different natural and synthetic polymers represents one of the most attractive research areas over the last several years. Many efforts have been carried out to find new solutions for developing stimuli-responsive polymers sensitive to different triggers, which have a fast and reversible nonlinear response to small changes of external stimuli or environmental conditions. In combination with other organic/innorganic/macromolecular compounds, new composite materials owning multifunctional properties can be designed. Thus, the inorganic nanoparticles incorporated into a polymer matrix provide novel functionalities to hydrogels and tunable properties. This book reviews recent advances and developments of various classes of stimuli responsive polymer materials, different type of hydrogels for biomedical and pharmaceutical devices, scaffolds for tissue regeneration, and stimuli-responsive sensors or separation processes.
The polymerization process of 2-hydroxyethyl methacrylate (HEMA) with an acetal-type crosslinking... more The polymerization process of 2-hydroxyethyl methacrylate (HEMA) with an acetal-type crosslinking agent3, 9-divinyl-2, 4, 8, 10-tetraoxaspiro [5.5]-undecane (U)was investigated. The copolymers synthesis has been performed in emulsion in the presence ...
A polyacrylamide hydrogel having a thermoresponsive character was prepared by simultaneous crossl... more A polyacrylamide hydrogel having a thermoresponsive character was prepared by simultaneous crosslinking solution copolymerization method. Different thermoresponsive properties were obtained by changing the initial ratio of acrylamide and N,N'-methylenebisacrylamide as crosslinker. The swelling behaviour in water until equilibrium was evaluated for all the hydrogel systems.
In the study hydrogels poly(acrylamide) based with different concentration of N,N'-methyleneb... more In the study hydrogels poly(acrylamide) based with different concentration of N,N'-methylenebis(acrylamide) as a crosslinker agent were prepared using a redox polymerization system. The observations on equilibrium swelling and thermal analysis are related with the thermoresponsive character. This aspect is in relation with the copolymer destination as an inner material for cold therapy packs.
The arising problems using hematoxylin as a dye, is their oxidization to hematein. This process i... more The arising problems using hematoxylin as a dye, is their oxidization to hematein. This process is called ripening. The oxidation is achieved by adding a wide variety of oxidizing agents, the two most common being sodium iodate and mercuric oxide. The paper presents the possibilities of hematoxylin ripening in plasma conditions.
It is well known that hydrogels are suitable for biomedical, agricultural and industrial applicat... more It is well known that hydrogels are suitable for biomedical, agricultural and industrial applications. In particular, they have been widely used for the preparation of drug-delivery systems. In this study, hydrogels of poly(acrylamide) with different concentration of N,N'-methylenebis(acrylamide) as a crosslinker were prepared by a redox polymerization method. The observations on equilibrium swelling and thermal analysis are related with the thermoresponsive character. This aspect is in relation with the copolymer destination as an inner material for cold therapy packs.
Uploads
Papers by Loredana E Nita