Nanoparticle-Anchored Plasticizers - US EPA
Plasticizers change the properties of a polymer by increasing the free volume between polymer chains, allowing more chain movement, which translates to more flexibility of the softened plastic. TDA has shown that plasticizers anchored to nanoparticles can soften PVC but cannot escape from the polymer. Although the nanoparticles resis-
Plasticizers Prices: Latest Price, Pricing, News, Market Analysis
North America. Plasticizers prices rose sharply in Q1 2025 as a result of the sharp rise in crude oil prices and improved downstream demand. The price of dioctyl phthalate averaged 1875 USD/MT towards the end of first sector. The increase in upstream value prices and the strengthening domestic market demand were the main factors influencing
Ruthenium anchored on carbon nanotube electrocatalyst
Here, authors report ruthenium nanoparticles anchored on multi-walled carbon nanotubes as an efficient catalyst for H2 evolution in both acidic and alkaline media.
Flexible and strong ternary blends of poly(vinyl chloride
The previous materials are still to be considered as hard PVC products as the amount of plasticizer grafted on the nanoparticle surface was rather low (2–30 wt%) resulting in all cases less than 1.5 wt % of PBA in the films. Here we aimed at flexible PVC blends with retained or improved tensile strength and modulus. 2. Materials and methods2.1.
Final Report | Nanocomposite Anchored Plasticizers | Research
Final Report: Nanocomposite Anchored Plasticizers EPA Contract Number: 68D02060 Title: Nanocomposite Anchored Plasticizers Investigators: Myers, Andrew Small Business: TDA Research Inc. EPA Contact: Richards, April Phase: II Project Period: June 1, 2002 through June 1, 2004 Project Amount: $225,000
- What is a polymer nanocomposite (PNC)?
- The addition of nanoparticles (NPs) to a polymer matrix, forming a polymer nanocomposite (PNC), is known to alter the microscopic dynamic processes of both species which leads to unique macroscopic material properties of the PNC.
- Are polymer nanocomposites a model system?
- Polymer nanocomposites are also model systems to understand multicomponent systems with related physics. For example, the large surface area to volume ratio of NPs increases the amount of interfacial polymer. Thus, systematic studies of well-defined PNCs can probe the structure and dynamics of polymers near interfaces [31, 50].
- What happens when NPs are highly mobile relative to a polymer?
- Recent reports highlight the unique dynamic behaviors when NPs are highly mobile relative to the polymer: drastic changes to the glass transition temperature, homogeneously slow segmental dynamics in the melt state, and a commensurate slowing of chain dynamics [108, 109].
- Are nanoparticles better than composites?
- Compared to composites with micron-sized fillers, the use of nanoparticles (NPs) drastically increases the NP-polymer interfacial area and decreases NP-NP separations at the same concentration of filler [1, 2]. As such, a resulting PNC can have drastically different properties as compared to the host matrix or traditional composites.
- Does the NP-polymer interface reduce artificial packing and enhanced density?
- Furthermore, the appropriate structure of the NP that eliminates artificial packing and enhanced density at the interface and properly simulates the energetic landscape at the NP-polymer interface remains unclear, partly due to a limited understanding of NP interfaces experimentally.
