the more cross-linked the gel is the greater the storage modulus is

Improving the mechanical and thermal properties of gelatin

Rheological measurements confirmed a 150% improvement in storage modulus ( G ′) of the cross-linked hydrogels compared to neat gelatin. Chemical cross

(A) Storage modulus (G'') and loss modulus (G") of the gel versus

(B) Storage modulus (G'') and loss modulus (G") of the gel versus frequency sweep (strain 1%). from publication: Engineering photo cross-linked porous network for efficient and

An in-situ cross-linked network PMMA-based gel polymer

Throughout the whole deformation range, the storage modulus of the cross-linked PMMA-based GPEs is greater than the loss modulus (i.e. displaying elastic characteristics).

Enzymatically cross-linked tilapia gelatin hydrogels: physical,

Our experiments show that the gel characteristics vary widely with the thermal protocol. The final storage modulus in chemical gels increased with enzyme

Rheological characterization of polymer gels and networks

Such cross-links usually act not at a point on the chain as do covalent cross-links, but involve more extended `junction zones''. There are many examples of these including gels formed from both tactic and atactic polystyrenes in appropriate solvents, PVC, PVA, ionomer systems, gelatin, agarose and globular proteins.

What does higher storage modulus mean? | ResearchGate

So the answer to your first question, higher storage modulus means less swelling (assuming you re comparing hydrogels of the same type with different degrees of swelling). If you are observing a

Loss Modulus

2.2 Storage modulus and loss modulus. The storage modulus and the loss modulus can also be called elastic modulus and viscous modulus respectively. When the loss modulus and the storage modulus are equal, the material to be measured belongs to semi-solid, and the hydrogel used for cartilage defect repair is one of them.

Polymer gel with a flexible and highly ordered three-dimensional

The more accurate gel point was determined in a dynamic viscoelastic measurement as the crossover point of the storage modulus G′ and loss modulus G″ ().

Effect of temperature and cross-linking density on rheology of chemical cross-linked guar gum at the gel

At 7 C and 1 Hz G′ is already higher than G″ (Fig. 4b) implying a system that, being already in an entangled state, in the presence of the cross-linker very slowly evolves towards a real permanent network.At 37 C the system shows a different behaviour: the two moduli assume values lower than those recorded at 7 C and, at 1 Hz, the storage

A benchmark for gel structures: bond percolation enables the

We used the cross point of the storage modulus and the loss modulus of the sample as the gel point. The scattering profiles of a homogeneous gel are very

Effect of crosslink-induced heterogeneities on the transport and deformation behavior of hydrophilic ionic

As a result, the storage modulus is a stronger function of frequency (G′ ∼ ω 0.63). Figure 11b shows the variation of storage modulus with frequency at 0.1% strain for PVA-10SSA. Similar

Insight Into the Strengthening Mechanism of the Al-Induced Cross-Linked Calcium Aluminosilicate Hydrate Gel

This study characterizes the mechanical properties and failure mechanism of cross-linked C-A-S-H that have Al/Si ratios ranging from 0 to 0.20 by employing the reactive molecular dynamics simulation.

Stretchable, self-healable, and reprocessable chemical cross

However, most of the self-healable and stretchable ionogels based on biopolymer are physical cross-linked gel that cross-linked by hydrogen-bonding or

The water holding capacity and storage modulus of chemical

However, a negative relationship between the size of protein aggregates and the storage modulus of gels was observed, due to that more cross links were induced

Rheological properties of hydrogels based on ionic liquids

In this work, we focus on chemically cross-linked hydrogels based on poly (ionic liquid)s and the characterization of their rheological behavior as well as the investigation of the variation of these properties during polymerization. The effects of monomer structure on the gelation time was investigated. In addition, the effects of

Nested non-covalent interactions expand the functions of

Addition of 1 equiv DAQ to this liquid yielded a robust, free-standing gel with a storage modulus of 2300 Pa. This gel could then be dissolved through the subsequent addition of 3 equiv Pd 2+ .

In Situ Cross-Linked Gel Polymer Electrolyte Membranes with

The resulting membranes were immersed in a liquid electrolyte solution in a glove box before being conducted into lithium batteries. For convenience, the in situ cross-linked gel polymer electrolytes are labeled as CPE-1, CPE-2, CPE-3, CPE-4, and CPE-5

A universal method to easily design tough and stretchable

Tough and stretchable hydrogels can be prepared by free radical polymerization with a high monomer concentration and low cross-linker content to

Experimental data and modeling of storage and loss moduli for a biosensor based on polymer nanocomposites

Actually, the storage modulus drops at the miscible section, however the high elasticity nearby the mixing - demixing temperature causes a sudden change in the storage modulus [12], [43]. Accordingly, the rheological measurements are accurate and applicable to characterize the phase separation and morphology of polymer products.

Mon - Fri, 8:00 - 9:00