1,3:2,4-Di-p-methylbenyliedene Sorbitol

• CAS: 54686-97-4
• Catalog Number: ACM54686974
• Category: Main Products
• Molecular Weight: 386.44
• Molecular Formula: C22H26O6
• Synonyms: Bis(4-methylbenzylidene)sorbitol
• Appearance: White to off-white powder

Case Study

Bilayer composites fabricated and studied by using 1,3:2,4-Di-p-methylbenyliedene Sorbitol

Alexander, Symone LM, and LaShanda TJ Korley. Soft Matter 13.1 (2017): 283-291.

The study highlights the potential of electrospun nanofiber mats and self-assembled nanofiber networks to synergistically connect to induce wet-state behavior. Control poly(vinyl alcohol) (PVA) electrospun active layers and 1,3:2,4-Di-p-methylbenyliedene Sorbitol (MDBS) self-assembled passivating layers encapsulated in an ethylene oxide-epichlorohydrin (EO-EPI) copolymer matrix were fabricated to examine the effects of composition on guiding wet-state properties, such as water transport, layer thickness, and layer modulus. Experimentally determined material constants were used in conjunction with mathematical modeling to determine ideal layer properties. Results showed that the active layer with the highest PVA content exhibited the fastest water transport, while the passive layer with the highest MDBS content exhibited the slowest water transport. However, due to the lower modulus and thickness of the PVA nanofiber active layer, the wet-state bilayer fabricated using the lowest PVA content and highest MDBS fraction was expected to induce the largest curvature change. Reducing the MDBS content reduced the passivation layer modulus while increasing water transport, which theoretically reduced the overall bilayer curvature.
First, the 1,3:2,4-Di-p-methylbenyliedene Sorbitol (MDBS) gelling agent mixture was poured into a Teflon mold and allowed to sit for 5 min until the solvent flow ceased. A pre-weighed electrospun mat was then placed on top of the MDBS layer and 3 mL of polymer solution (50 mg mL-1 EO-EPI in anisole) was poured on the mat. The composite was dried under ambient conditions for two days and further vacuum dried at room temperature to remove any residual solvent. After drying, the film was removed from the mold and compression molded for 2 min to improve film uniformity. To remove the film from the Teflon substrate, the film was cooled with liquid nitrogen and peeled off the substrate, resulting in a uniform film.

1,3:2,4-Di-p-methylbenyliedene Sorbitol for self-assembly composites

Alexander, S. L. M., S. Ahmadmehrabi, and L. T. J. Korley. Soft Matter 13.33 (2017): 5589-5596.

Natural systems use nanofibrous structures to direct water transport, tune mechanical properties, and actuate in response to environmental changes. To exploit these properties, a hygroscopic bilayer composite consisting of a self-assembled fiber network and an oriented electrospun fiber network was prepared. One layer utilized molecular gel 1,3:2,4-Di-p-methylbenyliedene Sorbitol (MDBS) self-assembly to improve hydrophobicity and strength, while the other layer used oriented electrospun polyvinyl alcohol (PVA) nanofibers to increase hydration rate and promote tunability in its actuation. The two fiber networks were connected in a polyethylene oxide-epichlorohydrin copolymer (EO-EPI) matrix to achieve hydration actuation with tunable curvature.
The 1,3:2,4-Di-p-methylbenyliedene Sorbitol MDBS and EO-EPI mixture was poured into a Teflon mold and allowed to stand for 5 minutes until the solvent stopped flowing. Based on our previous studies, the molecular gel content in the passivation layer was selected to be 1% (by weight) or approximately 50 mg. This concentration yields the maximum hydrophobicity and Young's modulus, above which the MDBS begins to crystallize rather than form a self-assembled fiber network. A pre-weighed, oriented electrospun PVA mat was then placed on the MDBS layer, and 3 mL of the polymer solution (50 mg mLEO-EPI in anisole) was poured onto the mat. The PVA-MDBS composite was dried under ambient conditions for two days and then further vacuum dried at room temperature to remove any residual solvent. After drying, the film was removed from the mold, placed between two Teflon substrates, and compression molded at 70 ± 1°C for 2 minutes at 10,000 pounds of pressure to improve the uniformity of the film. To remove the composite from the Teflon substrate, the film was cooled with liquid nitrogen and peeled off the substrate to obtain a uniform film.

Custom Q&A

What is the molecular formula of 1,3:2,4-Di-p-methylbenyliedene Sorbitol?

The molecular formula is C22H26O6.

What are the synonyms of 1,3:2,4-Di-p-methylbenyliedene Sorbitol?

The synonyms are Di-p-methylbenzylidenesorbitol, 1,3:2,4-Di-p-methylbenyliedene sorbitol, Gel All MD, D-Glucitol, 1,3:2,4-bis-O-((4-methylphenyl)methylene)-, IRGACLEAR DM, and more.

What is the CAS number of 1,3:2,4-Di-p-methylbenyliedene Sorbitol?

The CAS number is 81541-12-0.

What is the IUPAC name of 1,3:2,4-Di-p-methylbenyliedene Sorbitol?

The IUPAC name is (1R)-1-[(4R,4aR,8aS)-2,6-bis(4-methylphenyl)-4,4a,8,8a-tetrahydro-[1,3]dioxino[5,4-d][1,3]dioxin-4-yl]ethane-1,2-diol.

What is the InChIKey of 1,3:2,4-Di-p-methylbenyliedene Sorbitol?

The InChIKey is LQAFKEDMOAMGAK-RLCYQCIGSA-N.

What is the molecular weight of 1,3:2,4-Di-p-methylbenyliedene Sorbitol?

The molecular weight is 386.4g/mol.

How many hydrogen bond donor counts does 1,3:2,4-Di-p-methylbenyliedene Sorbitol have?

It has 2 hydrogen bond donor counts.

How many hydrogen bond acceptor counts does 1,3:2,4-Di-p-methylbenyliedene Sorbitol have?

It has 6 hydrogen bond acceptor counts.

How many rotatable bond counts does 1,3:2,4-Di-p-methylbenyliedene Sorbitol have?

It has 4 rotatable bond counts.

What is the topological polar surface area of 1,3:2,4-Di-p-methylbenyliedene Sorbitol?

The topological polar surface area is 77.4Ų.