Nanohybrid Polymeric Nucleating Agents: In Situ Decorated Carbon Nanotubes and Serial Nucleation Behaviors in a Melt‐Miscible Crystalline/Crystalline Blend

Ye, Lijun; Ye, Cuicui; Shi, Xianchun; Wang, Hengti; Zhao, Hongyan; Cao, Xin; You, Jichun; Li, Yongjin; Liang, Yuanyuan

doi:10.1002/macp.201500196

Cited by 3 publications

(3 citation statements)

References 60 publications

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“…Moreover, the interfaces can play a role of mold wall and enlarge the shearing effect. The nucleation easily generates in the interface, forming the oriented interfacial crystals. , It is noted that the formation of interfacial crystals is reported to improve interfacial adhesions and prevent the slippage of molecular chains.…”

Section: Resultsmentioning

confidence: 99%

Robust, Fully Biodegradable Films of Polyesters Realized by In Situ Formation of an Interconnected Multi-Nanolayer Structure under Extensional Flow

Sun

et al. 2023

ACS Appl. Mater. Interfaces

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Multilayer structures are not only applied to manipulate properties of synthetic polymer materials such as rainbow films and barrier films but also widely discovered in natural materials like nacre. In this work, in situ formation of an interconnected multi-nanolayer (IMN) structure in poly(butylene adipate-co-terephthalate) (PBAT)/poly(butylene succinate) (PBS) cocontinuous blends is designed by an extensional flow field during a “casting–thermal stretching” process, combining the properties of two components to a large extent. Hierarchical structures including phase morphology, crystal structure, and lamellar crystals in IMN films have been revealed, which clearly identifies the crucial role of extensional flow. The oriented PBAT phase in the IMN structure can be beneficial to the epitaxial growth of PBS crystals onto the PBAT nanolayers, thus improving interfacial adhesions. Furthermore, intense extensional stress can also promote crystallinity and thicken the lamellar structure. Given such distinct features in the fully biodegradable films, a simultaneous enhancement in tear strength, tensile strength, and puncture resistance has been achieved. To the best of our knowledge, the tear strength of IMN films about 285.9 kN/m is the highest level in the previous works of this system. Moreover, the proposed fabrication way of the IMN structure is facile and scalable, which is highly expected to be an efficient strategy for development of structured biodegradable polymers with excellent comprehensive properties.

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Section: Resultsmentioning

confidence: 99%

Robust, Fully Biodegradable Films of Polyesters Realized by In Situ Formation of an Interconnected Multi-Nanolayer Structure under Extensional Flow

Sun

et al. 2023

ACS Appl. Mater. Interfaces

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“…Third, the POM/0.9MWCNT composites exhibited higher crystallization speed than that of the PLLA/0.9MWCNT composites, suggesting that the POM crystallization happened first and then followed the PLLA crystallization in the PLLA/POM/MWCNT composites. It has been reported that POM first crystallized on the surface of MWCNTs to form hybrid structure crystals which subsequently served as nucleating agents for PLLA crystallization . As a result, the MWCNTs were probably surrounded by POM and PLLA crystallites which was disadvantageous for the electron transport among MWCNTs.…”

Section: Resultsmentioning

confidence: 99%

“…Although the compatible polymers could overcome this disadvantage, it was hard to control distribution of conductive fillers in compatible polymer blends. Poly(oxymethylene) (POM), which is miscible with PLLA, was used to modify the properties of PLLA. , However, there was similar distribution of MWCNTs in PLLA, POM, and PLLA/POM blends. , Fortunately, the effects of single-walled carbon nanotube (SWCNT) concentration and PLLA crystallinity on conductivity of PLLA/SWCNT composites have been reported . Furthermore, the crystallinity of PLLA could be tuned in a wide range (0–50%), which could greatly help to reconstruct the MWCNT networks in the composites. − …”

Section: Introductionmentioning

confidence: 99%

Adjusting Distribution of Multiwall Carbon Nanotubes in Poly(L-lactide)/Poly(oxymethylene) Blends via Constructing Stereocomplex Crystallites: Toward Conductive and Microwave Shielding Enhancement

Peng

Tan

et al. 2019

J. Phys. Chem. C

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Controlling distribution of conductive fillers is a key strategy to construct conductive networks with high efficiency and enhance the conductivity of conductive polymer composites (CPCs). In this work, the distribution of multiwall carbon nanotubes (MWCNTs) in a compatible poly(L-lactide) (PLLA)/poly(oxymethylene) (POM) blend was adjusted by constructing stereocomplex crystallites (SCs). Because of the nucleation effect of SCs, the total crystallinity of the polymer blends increased at the small content of poly(D-lactide) (PDLA). However, the total crystallinity decreased when adding large amount of PDLA due to the confinement effect of SCs. The distribution of MWCNTs could be tuned by the crystallinity of PLLA/POM blends due to the volume-exclusion effect. The electrical conductivity of PLLA/POM/MWCNT composites increased from 1.90 × 10–3 to 5.56 S/m by adding 2.5 wt % PDLA in PLLA phase. However, the electrical conductivity of the composites decreased at high content of PDLA in PLLA phase because the PLLA and POM crystallization was probably confined by the high amount of SCs. The electromagnetic interference shielding effectiveness reached ∼28.8 dB in the composites with 3.0 wt % MWCNTs, and the mechanical properties were also improved with the incorporation of proper SCs amount. This work gives a new method to facilitate high-performance CPCs via adjusting distribution of MWCNTs.

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Constructing nanopores in poly(oxymethylene)/multi-wall carbon nanotube nanocomposites via poly(l-lactide) assisting for improving electromagnetic interference shielding

Chen

Tang

et al. 2020

Journal of Colloid and Interface Science

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Nanohybrid Polymeric Nucleating Agents: In Situ Decorated Carbon Nanotubes and Serial Nucleation Behaviors in a Melt‐Miscible Crystalline/Crystalline Blend

Cited by 3 publications

References 60 publications

Robust, Fully Biodegradable Films of Polyesters Realized by In Situ Formation of an Interconnected Multi-Nanolayer Structure under Extensional Flow

Robust, Fully Biodegradable Films of Polyesters Realized by In Situ Formation of an Interconnected Multi-Nanolayer Structure under Extensional Flow

Adjusting Distribution of Multiwall Carbon Nanotubes in Poly(L-lactide)/Poly(oxymethylene) Blends via Constructing Stereocomplex Crystallites: Toward Conductive and Microwave Shielding Enhancement

Constructing nanopores in poly(oxymethylene)/multi-wall carbon nanotube nanocomposites via poly(l-lactide) assisting for improving electromagnetic interference shielding

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