Preparation of unsaturated polyesters using boric acid as mild catalyst and their sulfonated derivatives as new family of degradable polymer surfactants

Alemdar, Neslihan; Erciyes, A. Tuncer; Bıçak, Niyazi

doi:10.1016/j.polymer.2010.08.066

Cited by 34 publications

(30 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They were synthesized from ethylene glycol with cyclic (phthalic-, maleic, or succinic) anhydrides with a boric acid-pyridine mixture as a catalyst for the polycondensation (Table 8, entry 6). [135] Liu et al utilized the terpolymerization of CO 2 , propylene epoxide, and maleic anhydride with zinc adipate as a catalyst to prepare a series of biodegradable terpolymers (entry 7). [24] If these surfactants lose their surface active properties upon degradation, they could, in principle, be used for drug delivery, compatibilization or also in demulsification processes.…”

Section: Bioactive Surfactantsmentioning

confidence: 99%

Functional Colloidal Stabilization

Bijlard

Wald

Crespy

et al. 2016

Adv Materials Inter

View full text Add to dashboard Cite

acids), and protective agents. The unifying concept and key property of colloidal stabilizers is to provide a significant repulsion between the individual dispersed particles, making the heterophase system kinetically stable, which is typically accomplished via electrostatic or steric stabilization.Functional colloid stabilization provides additional features in addition to simple repulsion via physisorbed molecules. In fact, it is surprising that the majority of artificial heterophase systems have overlooked the simple and efficient possibility of spatially resolved chemical modification. The utilization of surface-active functional stabilizers is a fast and flexible method to obtain colloidal particles with strongly improved interaction properties. This functionalization has proved extremely material-and time-efficient. Due to the self-assembling ability of the stabilizers, the functional groups allow for an exact positioning of chemical and physical interaction sites directly in the surface region of the colloidal particle.The purpose of this review is to highlight functional colloidal stabilization as defined above. Our main focus concentrates on reactive systems, especially heterophase polymerization in oil-in-water (o/w) and water-in-oil (w/o) emulsions; a waterin-oil emulsion is regarded as an inverse emulsion. We differentiate between various types of surfactants which can either adsorb or react to the dispersed material with one segment, while the second part of the amphiphile stabilizes the dispersion. The stability of emulsions can be obtained by either low or high mole cular weight surfactants. Additionally, we distinguish between surfactants from so-called protective colloids of higher mole cular weight without significant self-aggregation properties. Throughout this review, the literature on functional colloidal stabilizers was revised and classified according to molecular weight, preparation technique, chemical structure, and stimuli-responsive behavior. Certain aspects such as inorganic/organic hybrids, or bioconjugates with sequence-defined structures such as peptides and nucleotides, are not in the scope of the present review and will only be briefly described when relevant.The review is structured as follows: we start with a brief summary of conventional low molecular weight (Section 2.1) and polymeric surfactants (Section 2.2) which typically lack of additional function besides the colloid stabilization. Only some of these also industrially used surfactants carry, for example, olefins or hydroxyl-groups embedded in their chemical structure, but do not have additional handles to the colloids. After this Surfactants can stabilize colloids in dispersion; however, also additional chemical or physical functions can be added by the surfactant chemistry to the colloid. This review covers functional colloid stabilization whereby supplementary features in addition to simple repulsion via physisorbed mole cules are described. The utilization of surface-active functional stabilizers as a fast and flexibl...

show abstract

Section: Bioactive Surfactantsmentioning

confidence: 99%

Functional Colloidal Stabilization

Bijlard

Wald

Crespy

et al. 2016

Adv Materials Inter

View full text Add to dashboard Cite

show abstract

“…During the past two decades, great efforts have been made to modify PBS. Functional pendant groups such as hydroxyl or sulfonate groups can be introduced into the structure of PBS copolymers, which not only improves the hydrophilicity and degradability of PBS, but also makes it possible to further modify the structure of PBS. For example, Zhang et al .…”

Section: Introductionmentioning

confidence: 99%

“…However, no work has been reported about PDMAEMA‐modified PBS to the best of our knowledge, although PBS is a degradable and biocompatible polyester. Also, among functional groups or polymers, only uncharged hydroxyl groups, PMPC polymer and negatively charged sulfonate groups have been used to modify PBS . No positively charged group or polymer has been used to modify PBS.…”

Section: Introductionmentioning

confidence: 99%

Preparation of poly(butylene succinate)‐poly[2‐(dimethylamino)ethyl methacrylate] copolymers and their applications as carriers for drug delivery

Zhao

Guo

et al. 2018

Polymer International

View full text Add to dashboard Cite

Copolymers of poly[2‐(dimethylamino)ethyl methacrylate]–poly(butylene succinate)–poly[2‐(dimethylamino)ethyl methacrylate] (PDMAEMA–PBS–PDMAEMA, PDBD) were synthesized through a chain‐extension reaction. The thermal properties characterized using differential scanning calorimetry showed that the introduction of PDMAEMA chains slightly decreased the melting temperature of PBS. The water contact angle of PDBD copolymer films with media of various pH decreased with a decrease of pH. This should be ascribed to the conformational transition of PDMAEMA blocks from a compact coil to an expanding shape in accordance with the variation of the pH of the surroundings. The results of dynamic light scattering and scanning electron microscopy revealed that PDBD copolymers could form spherical micelles with small particle size and narrow particle size distribution. Furthermore, drug loading (loading content, ca 10%; encapsulation efficiency, ca 60%) and release experiments were conducted using doxorubicin as a hydrophobic model drug. The results of release experiments of copolymer nanomicelles showed that these micelles had pH‐responsive properties. © 2018 Society of Chemical Industry

show abstract

“…Acetals have many properties such as aroma or chemical stability [1], which were used widely in fragrances and food avors [2][3][4]. Acetal compounds are stable in neutral and alkaline conditions and will degradate and generate a material of small molecules in acidic conditions.…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of (2-(4-bromophenyl)-5-ethyl-1,3-dioxan-5-yl)methanol, C₁₃H₁₇BrO₃

Zhang

Yuan

Zhang

et al. 2016

Zeitschrift Für Kristallographie - New Crystal Structures

View full text Add to dashboard Cite

Preparation of unsaturated polyesters using boric acid as mild catalyst and their sulfonated derivatives as new family of degradable polymer surfactants

Cited by 34 publications

References 6 publications

Functional Colloidal Stabilization

Functional Colloidal Stabilization

Preparation of poly(butylene succinate)‐poly[2‐(dimethylamino)ethyl methacrylate] copolymers and their applications as carriers for drug delivery

Crystal structure of (2-(4-bromophenyl)-5-ethyl-1,3-dioxan-5-yl)methanol, C₁₃H₁₇BrO₃

Contact Info

Product

Resources

About

Preparation of unsaturated polyesters using boric acid as mild catalyst and their sulfonated derivatives as new family of degradable polymer surfactants

Cited by 34 publications

References 6 publications

Functional Colloidal Stabilization

Functional Colloidal Stabilization

Preparation of poly(butylene succinate)‐poly[2‐(dimethylamino)ethyl methacrylate] copolymers and their applications as carriers for drug delivery

Crystal structure of (2-(4-bromophenyl)-5-ethyl-1,3-dioxan-5-yl)methanol, C13H17BrO3

Contact Info

Product

Resources

About

Crystal structure of (2-(4-bromophenyl)-5-ethyl-1,3-dioxan-5-yl)methanol, C₁₃H₁₇BrO₃