Ligand design strategies to increase stability of
The strong basicity of H 8 dotp increased the thermodynamic stability constant of its Gd 3+ complex to a value higher than [Gd(OH 2)(dota)] 85, and also resulted in the presence of the
Research and progress of chemical depolymerization of waste
At present, the chemical recycling methods of waste PET polyester mainly include the following: (1) hydrolysis method; (2) methanol alcoholysis method; (3) ethylene glycol alcoholysis method; (4) alcohol-alkali combined depolymerization method; (5) ammonolysis; (6) other depolymerization methods.
Alcoholysis of PET to produce dioctyl terephthalate by
The yield of DOTP is defined by Eq. (2): (2) Yield percentage of DOTP = W t / W 0 × 100 % where W0 is the initial weight of PET and Wt is the weight of DOTP. 2.4. Separation of the IL and DOTP Owing to high price, non-volatility and thermal stability of ILs, the IL should be recycled.
CN107033003A - A kind of preparation method of DOTP - Google
The present invention relates to a kind of preparation method of DOTP, specially following steps：(1) terephthaldehyde's low-kappa number；(2) octanol is pre-processed；(3) catalytic reaction；(4) finished product is purified to obtain.By experiment, a kind of preparation method for DOTP that the present invention is provided, substantially reduce the time that TPA esterification process
CN104072365A - Preparation method of dioctyl terephthalate
The preparation method comprises the following steps: adding the raw materials including terephthalic acid and superfluous octanol to a reaction kettle, adding concentrated sulfuric acid as a...
- Can DOTP be used in building materials?
- Şimşek et al. added DOTP to concrete, reporting that the electrical resistance of the concrete increased with increased amounts of DOTP. They also found that DOTP could be used in building materials due to its high corrosion resistance .
- Is DOTP a suitable material for film production?
- DOTP can be a suitable material for film production due to its above-mentioned properties. Polyvinyl alcohol (PVA) is one of the preferred film-forming materials because it is non-toxic and non-carcinogenic, and has high thermal stability, high optical permeability, high flexibility and chemical resistance [, , , ].
- Do nanomaterials overshadow the positive effects of DOTP on hardness and elasticity?
- It is evident that nanomaterials used in large amounts overshadow the positive effects of DOTP on hardness and elasticity. The mechanical test results showed that a long mixing time provided more successful homogenization of the composite films.
- What are the advantages of DOTP composite films?
- DOTP provides composite films high hydrophilicity and thermal stability. DOTP composites films should be preferred such as bandages for medical sectors. DOTP blended composite films has very high hardness and elastic modulus value. Novel PVA/DOTP-composite films incorporated with GO and AgNPs were produced.
- Does DOTP reduce the elastic modulus of DP composite film?
- However, when DOTP was used with GO in a PVA matrix, it decreased the elastic modulus of the composite film due to the agglomeration problem of the nanomaterial. The DP composite film modified with AgNPs with the highest elastic modulus was DPA7, with a 7.6 μm thickness (Fig. 5 E).
- What is DOTP used for?
- DOTP is used to produce polymer matrices in copolymers, dyes, unsaturated polyesters, polyisocyanurate foams, textile softeners, polyurethane coatings, cementitious materials [8, 11, , , , , ] and also medical devices .
