Enzymatic ring-opening polymerization and polycondensation [140]
Computational Insights into Enzymatic Ring Opening Mechanisms
... 3. The boundary should ideally be set between a non-‐polar C-‐C bond. 4. The boundary can only be represented by a single link atom. Ideally, most of these guidelines should be followed when constructing a QM/MM model ...
100
Applications and Extensions of Living Ring Opening Metathesis Polymerization
... after polymerization require lengthy purification procedures such as ...direct polymerization of a variety of functional ...of polymerization can be easily and precisely controlled by adjusting the ...
218
Ring-Opening Metathesis Polymerization of Functionalized Cyclobutenes Derivatives
... Those data indicate that the presence of cis-cyclooctene certainly modifies the catalyst reactive site during the propagation stage. The influence of olefinic additive on polymerizations performed with ill-defined ...
259
Functionalized polymers and surfaces via ring-opening metathesis polymerization
... 5.3, polymerization times ...of polymerization time. For polymerization times greater than 1 h, the resulting polymer layer begins to decrease in ...
134
Novel "green" catalysts for controlled ring-opening polymerization of lactide
... Coordination-insertion ring-opening polymerization This approach utilizes (organo)metallic catalysts (initiators) containing vacant p or d ...The polymerization continues as additional lactide ...
43
Cellulose Reinforced Thermoplastic Composites By In-Situ Ring-Opening Polymerization
... low polymerization temperature (~ 150°C) minimizes the thermal degradation of the cellulosic fibers that is observed in conventional polymer processing methods like extrusion and injection molding as already ...
362
Synthesis of New Polymer Ionomers via Ring Opening Metathesis Polymerization
... via ring-opening metathesis polymerization (ROMP) using bis(tricyclohexylphosphine) benzylidene ruthenium(IV) dichloride (I) and tricyclohexylphosphine ...
9
Synthesis of Polypeptides by Ring-Opening Polymerization of a-amino Acid N-Carboxyanhydrides
... NCA polymerization described above should provide a means for controlled synthesis of polypeptide hybrid block ...NCA polymerization initiators (Scheme 7 ) [ 28 ...initiate polymerization of NCAs ...
26
Photo-Liberated Amines for N-Carboxyanhydride (PLANCA) Ring- Opening Polymerization
... Proton sponge (1.07 mg, 4.80 μmol) in anhydrous DMF (0.2 mL) and HA-NPPOC (7.4 mg, 0.024 mmol) in anhydrous DMF (0.74 mL) were added, and the mixture was allowed to continue to stir. A kinetic aliquot was taken as a t = ...
15
Synthesis and Modification of Phenol-Containing Catalysts for Ring-Opening Polymerization of Cyclic Esters
... • There is a lot of interest in the development of new catalysts for carrying out ring-opening trans- esterification polymerization (ROTEP) of cyclic esters. Many classes of new catalysts exist. ...
15
Functionalized Polymers from Ring-Opening Metathesis Polymerization Through Monomer Design
... of ring strain inherent in the cyclic olefin monomer plays a critical role in the polymerizability of each ...the ring strain and can render a monomer non-polymerizable via ...increase ring strain ...
123
Chronological review of the catalytic progress of polylactic acid formation through ring opening polymerization
... 6.2 Ultrasound/Ultrasonic Facilitated ROP of Lactide In literature, the use of UV and Ultrasound source is reported as an energy source for degradation of PLA chain. Work based on separation of PLA chain with their ...
21
Dialkylaluminium 2-imidazolylphenolates: Synthesis, characterization and ring-opening polymerization behavior towards lactides
... the ring-opening polymerization of lactides producing high molecular weight polylactide, both in the presence and absence of BnOH, and are rare examples of the use of bi-dentate ligation at aluminium ...
21
Strategies to Fabricate Polypeptide-Based Structures via Ring-Opening Polymerization of N-Carboxyanhydrides
... of polymerization including the preparation of functional monomers, the mechanisms and the recent developments in the ROP NCAs that permit a better control over dispersity and chain ...
61
Rapid, regioselective living ring opening metathesis polymerization of bio derivable asymmetric tricyclic oxanorbornenes
... regioselective ring-opening during polymerization delivering regioregular polymers of low molar mass dispersity (Đ) and high thermal stability within ...
15
Multiple Olefin Metathesis Polymerization That Combines All Three Olefin Metathesis Transformations: Ring-Opening, Ring-Closing, and Cross Metathesis
... ~S7~ General procedure of Tandem RO/RCM polymerization The monomer (0.1 mmol) was put into a 2 mL sized vial with septum and purged with Ar-gas. Degassed THF was added to the vial and stirred. A solution of ...
26
Biodegradable, flame retardant wood-plastic combination via in situ ring-opening polymerization of lactide monomers
... The research presented here seeks to create a fully biodegradable and fully flame retardant WPC via in situ ring-opening polymerization (Fig. 1) of lactide monomers and impregnation of the flame ...
7
Functional degradable polymers by radical ring opening copolymerization of MDO and vinyl bromobutanoate : synthesis, degradability and post polymerization modification
... after polymerization are likely to be ideal candidates as reactivity ratios of MDO and VAc have been proven to lead to random incorporations of ester repeat units in the polymer ...
11
Mono-oxo molybdenum(VI) and tungsten(VI) complexes bearing chelating aryloxides: synthesis, structure and ring opening polymerization of cyclic esters
... ε-caprolactone (ε-CL) From the tables below and the kinetic data in the ESI, it can be seen that the molybdenum compounds 1 and 4 out-performed their tungsten analogues 2 and 5. The systems do not exhibit good control, ...
28
Synthesis of Polysiloxanes In Microemulsion Via ring opening of D4
... the ring opening of D 4 with the acid catalyst condition, using the general emulsion polymerization ...the ring opening of D 4 ...
8